to: code-making panel 17 - nfpa...422.41 cord-and-plug-connected appliances subject to immersion....

TO:

FROM:

DATE:

M E M O R A N D U M

Code-Making Panel 17

Sarah Caldwell, Project Administrator

January 30, 2019

SUBJECT: NEC® Second Draft FINAL Ballot Results (A2019)

According to the final ballot results, all ballot items received the necessary

affirmative votes to pass ballot.

14 Members Eligible to Vote

0 Members Not Returned

The attached report shows the number of affirmative, negative, and abstaining

votes as well as the explanation of the vote for each revision.

To pass ballot, each revision requires: (1) a simple majority of those eligible to

vote and (2) an affirmative vote of 2/3 of ballots returned. See Sections 3.3.4.3.(c)

and 4.3.10.1 of the Regulations Governing the Development of NFPA

Standards.

Second Revision No. 7926-NFPA 70-2018 [ Global Comment ]

Replace all instances of " masonry or asphalt" with "concrete, masonry or asphalt" in the following sections.

426.20(C)(1)426.20(C)(2)426.20(D)426.22(A)426.22(B)426.22(C)426.22(D)426.24(A)

Submitter Information Verification

Committee: NEC-P17

Submittal Date: Mon Oct 29 16:25:37 EDT 2018

Committee Statement

CommitteeStatement:

Replace all instances of " masonry or asphalt" with "concrete, masonry or asphalt" in order toprovide consistency throughout the article.

ResponseMessage:

SR-7926-NFPA 70-2018

Ballot Results

This item has passed ballot

14 Eligible Voters

0 Not Returned

13 Affirmative All

1 Affirmative with Comments

0 Negative with Comments

0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee

Hamilton, III, E. P.

Jones, Emmanuel (Lee) DeWayne

Myers, Brian

O?Brien, Timothy R.

Sandberg, Chester L.

Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

National Fire Protection Association Report https://submittals.nfpa.org/TerraViewWeb/ContentFetcher?commentPar...

1 of 128 1/29/2019, 1:07 PM

Valdes, Marcelo E.

Williams, Matt B.

Affirmative with Comment

Querry, Dennis Michael

Agree


2 of 128 1/29/2019, 1:07 PM

Second Revision No. 7900-NFPA 70-2018 [ Detail ]

[Reinsert Article 422 Parts IV and V after Article 422 Part III from 2017 edition text as Attached]

Supplemental Information

File Name Description Approved

SR_7900_Article_422Parts_IV_and_V.docx For staff use

NEC_Global_SR-7900_Article_422_Parts_IV_and_V_new.docx For ballot


Committee: NEC-P17


Committee Statement

CommitteeStatement:

After further consideration, the panel recognizes that this information provides clarity to the userand also is consistent with the construction and marking requirements found elsewhere in theNEC.

ResponseMessage:

SR-7900-NFPA 70-2018

Public Comment No. 1272-NFPA 70-2018 [New Section after 422.35]

Ballot Results


14 Eligible Voters

0 Not Returned

11 Affirmative All



0 Abstention

Affirmative All

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


3 of 128 1/29/2019, 1:07 PM


Cook, Donald R.

While I support the first draft revision to eliminate Parts IV and V of Article 422, I also understand the concernsraised in the comment. The issues raised in the comment, were discussed during the first draft. I believe the itemsin Parts IV and V are currently covered by product standards. I also realize manufacturers or any other interestgroup could submit proposals to revise those product standards. However, the process used in the developmentand revision of product standards also requires approval from a majority of the stakeholders. I believe in thatprocess. Some of the requirements in Parts IV and V of Article 422 are also included in other generalrequirements of the NEC. That would reduce the risk of a single group of stakeholders having the ability to reviseproduct safety requirements. Additionally, those requirements from Parts IV and V are not met in an electricalinstallation or inspection, but rather met in a manufacturing facility. While it would take time to discuss eachsection individually, that process should be considered by all concerned groups. Each individual section wasreviewed during the 1st draft. While I'm not opposed to an effort to carefully consider all unintendedconsequences, I do not agree that elimination of Parts IV and V would result in significantly dangerous, listedappliances would occur.


Agree, however there were several public inputs that were never reviewed or considered since this was removedduring the first revision. The original inputs should be held over for the next code cycle and reviewed.

Negative with Comment

Blewitt, Thomas V.

Parts IV and V were carefully reviewed for their necessity in an installation Code. They were found to besubstantially redundant to the requirements for appliances specified in product safety standards. As a driver forthe product safety standards development process, Parts IV and V can be considered as having fulfilled theirobjective and are no longer necessary.


4 of 128 1/29/2019, 1:07 PM

Part IV. Construction 422.40 Polarity in Cord-and-Plug-Connected Appliances. If the appliance is provided with a manually operated, line-connected, single-pole switch for appliance on–off operation, an Edison-base lampholder, or a 15- or 20-ampere receptacle, the attachment plug shall be of the polarized or grounding type.

A 2-wire, nonpolarized attachment plug shall be permitted to be used on a listed double-insulated shaver.

Informational Note: For polarity of Edison-base lampholders, see 410.82.

422.41 Cord-and-Plug-Connected Appliances Subject to Immersion. Cord-and-plug-connected portable, freestanding hydromassage units and hand-held hair dryers shall be constructed to provide protection for personnel against electrocution when immersed while in the “on” or “off” position.

422.42 Signals for Heated Appliances. In other than dwelling-type occupancies, each electrically heated appliance or group of appliances intended to be applied to combustible material shall be provided with a signal or an integral temperature-limiting device.

422.43 Flexible Cords. (A) Heater Cords. All cord-and-plug-connected smoothing irons and electrically heated appliances that are rated at more than 50 watts and produce temperatures in excess of 121°C (250°F) on surfaces with which the cord is likely to be in contact shall be provided with one of the types of approved heater cords listed in Table 400.4 .

(B) Other Heating Appliances. All other cord-and-plug-connected electrically heated appliances shall be connected with one of the approved types of cord listed in Table 400.4 , selected in accordance with the usage specified in that table.

422.44 Cord-and-Plug-Connected Immersion Heaters. Electric heaters of the cord-and-plug-connected immersion type shall be constructed and installed so that current-carrying parts are effectively insulated from electrical contact with the substance in which they are immersed.

422.45 Stands for Cord-and-Plug-Connected Appliances. Each smoothing iron and other cord-and-plug-connected electrically heated appliance intended to be applied to combustible material shall be equipped with an approved stand, which shall be permitted to be a separate piece of equipment or a part of the appliance.

422.46 Flatirons. Electrically heated smoothing irons shall be equipped with an identified temperature-limiting means.

422.47 Water Heater Controls. All storage or instantaneous-type water heaters shall be equipped with a temperature-limiting means in addition to its control thermostat to disconnect all ungrounded conductors. Such means shall comply with both of the following:

(1) Installed to sense maximum water temperature.

(2) Be either a trip-free, manually reset type or a type having a replacement element. Such water heaters shall be marked to require the installation of a temperature and pressure relief valve.

Exception No. 1: Storage water heaters that are identified as being suitable for use with a supply water temperature of 82°C (180°F) or above and a capacity of 60 kW or above. Exception No. 2: Instantaneous-type water heaters that are identified as being suitable for such use, with a capacity of 4 L (1 gal) or less.

Informational Note: See ANSI Z21.22-1999/CSA 4.4-M99, Relief Valves for Hot Water Supply Systems.

422.48 Infrared Lamp Industrial Heating Appliances. (A) 300 Watts or Less. Infrared heating lamps rated at 300 watts or less shall be permitted with lampholders of the medium-base, unswitched porcelain type or other types identified as suitable for use with infrared heating lamps rated 300 watts or less.

(B) Over 300 Watts. Screw shell lampholders shall not be used with infrared lamps rated over 300 watts, unless the lampholders are identified as being suitable for use with infrared heating lamps rated over 300 watts.

422.50 Cord-and-Plug-Connected Pipe Heating Assemblies. Cord-and-plug-connected pipe heating assemblies intended to prevent freezing of piping shall be listed.

Part V. Marking 422.60 Nameplate. (A) Nameplate Marking. Each electrical appliance shall be provided with a nameplate giving the identifying name and the rating in volts and amperes, or in volts and watts. If the appliance is to be used on a specific frequency or frequencies, it shall be so marked.

Where motor overload protection external to the appliance is required, the appliance shall be so marked.

Informational Note: See 422.11 for overcurrent protection requirements.

(B) To Be Visible. Marking shall be located so as to be visible or easily accessible after installation.

422.61 Marking of Heating Elements. All heating elements that are rated over one ampere, replaceable in the field, and a part of an appliance shall be legibly marked with the ratings in volts and amperes, or in volts and watts, or with the manufacturer’s part number.

422.62 Appliances Consisting of Motors and Other Loads. (A) Nameplate Horsepower Markings. Where a motor-operated appliance nameplate includes a horsepower rating, that rating shall not be less than the horsepower rating on the motor nameplate. Where an appliance consists of multiple motors, or one or more motors and other loads, the nameplate value shall not be less than the equivalent horsepower of the combined loads, calculated in accordance with 430.110(C)(1).

(B) Additional Nameplate Markings. Appliances, other than those factory-equipped with cords and attachment plugs and with nameplates in compliance with 422.60 , shall be marked in accordance with 422.62(B)(1) or (B)(2).

(1) Marking. In addition to the marking required in 422.60 , the marking on an appliance consisting of a motor with other load(s) or motors with or without other load(s) shall specify the minimum supply circuit conductor ampacity and the maximum rating of the circuit overcurrent protective device. This requirement shall not apply to an appliance with a nameplate in compliance with 422.60 where both the minimum

supply circuit conductor ampacity and maximum rating of the circuit overcurrent protective device are not more than 15 amperes.

(2) Alternate Marking Method. An alternate marking method shall be permitted to specify the rating of the largest motor in volts and amperes, and the additional load(s) in volts and amperes, or volts and watts in addition to the marking required in 422.60. The ampere rating of a motor 1⁄8 horsepower or less or a nonmotor load 1 ampere or less shall be permitted to be omitted unless such loads constitute the principal load.

Second Revision No. 8124-NFPA 70-2018 [ Section No. 422.5(A) ]

(A) General.

Appliances identified in 422.5(A)(1) through (A)(8) (7) rated 250 150 volts or less to ground and 60amperes or less, single- or 3-phase, shall be provided with Class A GFCI protection for personnel.Multiple Class A GFCI protective devices shall be permitted but shall not be required.

(1) Automotive vacuum machines

(2) Drinking water coolers and bottle fill stations

(3) Cord-and-plug-connected high-pressure spray washing machines

(4) Tire inflation machines

(5) Vending machines

(6) Sump pumps

(7) Dishwashers

(7) Appliances installed in a dwelling unit as required by 210.8(A) (1) through (A)(10)

Informational Note: Section 210.8 specifies requirements for GFCI protection for the branch-circuit outlet where the covered location warrants such protection.


Committee: NEC-P17

Submittal Date: Tue Oct 30 20:33:38 EDT 2018

Committee Statement

CommitteeStatement:

A Second Revision for correlation, clarity, usability and standardized format when referencingSection 210.8 in 422.5(A) has been made. See Second Revision 7861.

A proposal to delete reference to “sump pumps” and “dishwashers” was Rejected since there wasno rationale provided for their removal.

In order to address the potential for an outlet to be connected to a branch circuit that exceeds therating of a GFCI (e.g. a 240-volt corner grounded delta circuit exceeds 150 V to ground), a secondrevision was made to include the 150 volt to ground rating condition. It was also clarified that theGFCI shall be a Class A type.

ResponseMessage:

SR-8124-NFPA 70-2018

Public Comment No. 688-NFPA 70-2018 [Section No. 422.5(A)]




Public Comment No. 2239-NFPA 70-2018 [Global Input]

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All


5 of 128 1/29/2019, 1:07 PM



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.



agree


Williams, Matt B.

The proposed addition of Dishwashers to the section 422.5 (A) has not been justified during the comment reviewphase. Section 210.8 clearly defines the GFCI requirements for branch circuits for dishwashers. An Integral GFCIis not a requirement for Dishwashers in any North American Safety Standards for dishwashers. On the otherhand, some of the appliances that are on the list of 422.5 (A) are specifically required to have integral GFCI pertheir respective UL Safety standards. Hence, 422.5 (A) could be construed as requiring an integrated GFCI inDishwashers by an AHJ which is not necessary or practical and frankly, redundant. Dishwashers should not beadded to section 422.5 (A).


6 of 128 1/29/2019, 1:07 PM

Second Revision No. 7868-NFPA 70-2018 [ Section No. 422.6 ]

422.6 Listing Required.

All appliances supplied by 50 volts or more higher shall be listed.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Replacing “more” with “higher” for consistency with language used throughout the Code. The 50Vreferenced in the Section can be obtained from a branch circuit but also from a fixed or plug-inpower supply. The current wording “supplied by” has been understood and effective.

ResponseMessage:

SR-7868-NFPA 70-2018

Public Comment No. 2060-NFPA 70-2018 [Section No. 422.6]

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



7 of 128 1/29/2019, 1:07 PM


agree


8 of 128 1/29/2019, 1:07 PM


422.13 Storage-Type Water Heaters.

A The branch-circuit overcurrent device and conductors for fixed storage-type water heaters thathas have a capacity of 450 L (120 gal) or less shall be considered a continuous load for the purposes ofsizing branch circuits sized not smaller than 125 percent of the rating of the water heater .

Informational Note: For branch-circuit rating, see 422.10.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The second revision provides additional clarity that the overcurrent device and the branchcircuit conductors shall not be rated less than 125% of the load.

ResponseMessage:

SR-7869-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


9 of 128 1/29/2019, 1:07 PM



agree


10 of 128 1/29/2019, 1:07 PM


(A) General.

Flexible cord shall be permitted as follows:

(1) to To connect appliances to facilitate their frequent interchange or to prevent the transmission ofnoise or vibration or

(2) to To facilitate the removal or disconnection of appliances that are fastened in place, where thefastening means and mechanical connections are specifically designed to permit ready removal formaintenance or repair and the appliance is intended or identified for flexible cord connection.

The receptacle shall be accessible. The flexible cord shall have an equipment grounding conductor andbe terminated with a grounding-type attachment plug.

Exception: A listed appliance distinctly marked to identify it as protected by a system of doubleinsulation shall not be required to be terminated with a grounding-type attachment plug.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

A Second Revision was made to 422.16(A) to address the NEC Style Manual (section 2.1.5.3) withrespect to separation of material into subdivisions where necessary and formatting of list items forclarity.

In addition, it was noted that an unintended consequence was introduced by the First Revision when“receptacle shall be accessible” and the grounding cord / plug / double insulation content waseditorially relocated from 422.16(B)(1), 422.16(B)(2) and 422.16(B)(4) to 422.16(A). It would haverequired double insulation or grounding for all appliances which was not the intent of the FirstRevision. In addition, it would have required all receptacles to be located to permit close approachand would not have permitted the not-uncommon appliance receptacle at an elevation (e.g. electricfan).

ResponseMessage:

SR-7872-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.


11 of 128 1/29/2019, 1:07 PM

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


12 of 128 1/29/2019, 1:07 PM

Second Revision No. 7875-NFPA 70-2018 [ Section No. 422.16(B) ]

(B) Specific Appliances.

(1) Electrically Operated In-Sink Waste Disposers.

Electrically operated in-sink waste disposers shall be permitted to be cord-and-plug-connected with aflexible cord identified as suitable in the installation instructions of the appliance manufacturer where all ofthe following conditions are met:

(1) The length of the cord shall not be less than 450 mm (18 in.) and not over 900 mm (36 in.).

(2) Receptacles shall be located to protect against physical damage to the flexible cord.

(3) The receptacle shall be accessible.

(4) The flexible cord shall have an equipment grounding conductor and be terminated with a grounding-type attachment plug.


(2) Built-in Dishwashers and Trash Compactors.

Built-in dishwashers and trash compactors shall be permitted to be cord-and-plug-connected with aflexible cord identified as suitable for the purpose in the installation instructions of the appliancemanufacturer where all of the following conditions are met:

(1) For a trash compactor, the length of the cord shall be 0.9 m to 1.2 m (3 ft to 4 ft) measured from theface of the attachment plug to the plane of the rear of the appliance.

(2) For a built-in dishwasher, the length of the cord shall be 0.9 m to 2.0 m (3 ft to 6.5 ft) measured fromthe face of the attachment plug to the plane of the rear of the appliance.

(3) Receptacles shall be located to protect against physical damage to the flexible cord.

(4) The receptacle for a trash compactor shall be located in the space occupied by the appliance oradjacent thereto.

(5) The receptacle for a built-in dishwasher shall be located in the space adjacent to the space occupiedby the dishwasher. Where the flexible cord passes through an opening, it shall be protected againstdamage by a bushing, grommet, or other approved means.




(3) Wall-Mounted Ovens and Counter-Mounted Cooking Units.

Wall-mounted ovens and counter-mounted cooking units complete with provisions for mounting and formaking electrical connections shall be permitted to be permanently connected or cord-and-plug-connectedwith a flexible cord identified as suitable for the purpose in the installation instructions of the appliancemanufacturer.

A separable connector or a plug and receptacle combination in the supply line to an oven or cooking unitshall be identified for the temperature of the space in which it is located.


13 of 128 1/29/2019, 1:07 PM

(4) Range Hoods and Microwave Oven/Range Hood Combinations.

Range hoods and over-the-range microwave ovens with integral range hoods shall be permitted to becord-and-plug-connected with a flexible cord identified as suitable for use on range hoods in theinstallation instructions of the appliance manufacturer, where all of the following conditions are met:

(1) The length of the cord is not less than 450 mm (18 in.) and not over 1.2 m (4 ft).

(2) Receptacles are located to protect against physical damage to the flexible cord.

(3) The receptacle is supplied by an individual branch circuit.





Committee: NEC-P17


Committee Statement

CommitteeStatement:

It was noted that an unintended consequence was introduced by the First Revision when “receptacleshall be accessible” and the grounding cord / plug / double insulation content was editoriallyrelocated from 422.16(B)(1), 422.16(B)(2) and 422.16(B)(4) to 422.16(A). It would have requireddouble insulation or grounding for all appliances which was not the intent of the First Revision. Inaddition, it would have required all receptacles to be located to permit close approach and would nothave permitted the not-uncommon appliance receptacle at an elevation (e.g. electric fan). Refer tothe changes made in SR 7872.

ResponseMessage:

SR-7875-NFPA 70-2018

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.


14 of 128 1/29/2019, 1:07 PM

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


15 of 128 1/29/2019, 1:07 PM


422.17 Protection of Combustible Material.

Each electrically heated appliance that is intended by size, weight, and service to be located in a fixedposition shall be placed so as to provide ample protection between the appliance and adjacentcombustible material in accordance with 110.3(B) .


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The current text uses the phrase "ample protection". This statement is ambiguous and thereforewas deleted. The reference to Section 110.3(B) was added to reinforce what is already required.

ResponseMessage:

SR-7880-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


16 of 128 1/29/2019, 1:07 PM



agree


17 of 128 1/29/2019, 1:07 PM


424.1 Scope.

This article covers fixed electric equipment used for space heating. For the purpose of this article, heatingequipment shall includes heating cables, unit heaters, boilers, central heating systems, or other fixedelectric space-heating equipment. This article shall does not apply to process heating and room airconditioning.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Revised section 424.1 to remove the mandatory language “shall” and “shall not” from thescope statement.

Response Message: SR-7970-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


18 of 128 1/29/2019, 1:07 PM



agree


19 of 128 1/29/2019, 1:07 PM


424.2 Definitions.

The definitions in this section shall apply only within this article.

Heating Panel.

A complete assembly provided with a junction box or a length of flexible conduit for connection to a branchcircuit.

Heating Panel Set.

A rigid or nonrigid assembly provided with nonheating leads or a terminal junction assembly identified asbeing suitable for connection to a wiring system.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The proposed language will provide clear direction to the code user and correlate withactions taken elsewhere in the code.

ResponseMessage:

SR-7976-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.


20 of 128 1/29/2019, 1:07 PM

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


21 of 128 1/29/2019, 1:07 PM


(A) Branch-Circuit Requirements.

Individual An individual branch circuits circuit shall be permitted to supply any volt-ampere or wattagerating of fixed electric space-heating equipment for which they are the branch circuit is rated.

Branch circuits supplying two or more outlets for fixed electric space-heating equipment shall be rated notover 30 amperes. In other than a dwelling unit, fixed infrared heating equipment shall be permitted to besupplied from branch circuits rated not over 50 amperes.


Committee: NEC-P17


Committee Statement

Committee Statement: The current use of the word “they” is ambiguous. The change clarifies the text.



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


22 of 128 1/29/2019, 1:07 PM



agree


23 of 128 1/29/2019, 1:07 PM


(B) Branch-Circuit Sizing.

Fixed The branch-circuit conductors for fixed electric space-heating equipment and any associatedmotors shall be considered continuous loads sized not smaller than 125 percent of the load .


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Text revised for clarity related to conductor sizing. Text related to overcurrent protection notaccepted as overcurrent protection requirements are covered in 424.22 (A).

ResponseMessage:

SR-7985-NFPA 70-2018

Public Comment No. 695-NFPA 70-2018 [Section No. 424.4(B)]

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



24 of 128 1/29/2019, 1:07 PM


agree


25 of 128 1/29/2019, 1:07 PM


424.10 Special Permission.

Fixed electric space-heating equipment and systems installed by methods other than those covered bythis article shall be permitted only by special permission from the authority having jurisdiction .


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The word "those" was added to this section to improve clarity of the methods that are permitted.The proposal recognizes the article 100 definition for “special permission”

ResponseMessage:

SR-7986-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


26 of 128 1/29/2019, 1:07 PM



agree


27 of 128 1/29/2019, 1:07 PM


(A) Serving as Both Controllers and Disconnecting Means.

Thermostatically controlled switching devices and combination thermostats and manually controlledswitches shall be permitted to serve as both controllers and disconnecting means, provided they meet allof the following conditions:

(1) Provided with a marked “off” position

(2) Directly open all ungrounded conductors when manually placed in the “off” position

(3) Designed so that the circuit cannot be energized automatically after the device has been manuallyplaced in the “off” position

(4) Located as specified in 424.19

(5) Located in a readily available an accessible location


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The undefined term "readily available" is replaced with the defined term "accessible". The term"readily accessible" was not used because some of this equipment can be located at heights orunder a cover, the use of the term readily accessible would not permit the use of a ladder to accessthe equipment.

ResponseMessage:

SR-7988-NFPA 70-2018





Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



28 of 128 1/29/2019, 1:07 PM


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


29 of 128 1/29/2019, 1:07 PM


(A) Branch-Circuit Devices.

Electric space-heating equipment, other than motor-operated equipment required to have additionalovercurrent protection by Articles 430 and Parts III and IV of Article 430 or Parts III and VI ofArticle 440, shall be permitted to be protected against overcurrent where supplied by one of the branchcircuits in Part II of Article 210.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

This rewording eliminates two violations of the whole-article cross-reference prohibition inthe Style Manual.



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


30 of 128 1/29/2019, 1:07 PM



agree


31 of 128 1/29/2019, 1:07 PM

Second Revision No. 8006-NFPA 70-2018 [ Section No. 424.22(C) ]

(C) Overcurrent Protective Devices.

The supplementary overcurrent protective devices for the subdivided loads specified in 424.22(B) shallbe meet all of the following conditions:

(1) Be factory-installed within or on the heater enclosure or supplied for use with the heater as aseparate assembly by the heater manufacturer;

(2) accessible, but shall not be required to be readily accessible; and Be accessible

(3) Be suitable for branch-circuit protection.

Informational Note: See 240.10.

Where cartridge fuses are used to provide this overcurrent protection for the subdivided loads , a singledisconnecting means shall be permitted to be used for the several as the disconnecting means for all ofthe subdivided loads.

Informational Note No. 1: For supplementary overcurrent protection, see 240.10.

Informational Note No. 2: For disconnecting means for cartridge fuses in circuits of any voltage, see240.40.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Provides clarification that if cartridge fuses are used a single disconnect is permitted to be usedas the disconnect for all the subdivided loads. This also aligns better with the text in 240.40 wherethis section is cross referenced.

The list has been reformatted to conform to the NEC Style Manual. The redundant text pertainingto "readily accessible" was removed.

ResponseMessage:

SR-8006-NFPA 70-2018

Public Comment No. 666-NFPA 70-2018 [Section No. 424.22(C)]

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.


32 of 128 1/29/2019, 1:07 PM

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


33 of 128 1/29/2019, 1:07 PM


424.36 Clearances of Wiring in Ceilings.

Wiring located above heated ceilings shall be spaced not less than 50 mm (2 in.) above the heatedceiling. The ampacity of conductors shall be calculated on the basis of an assumed ambient temperatureof at least not less than 50°C (122°F), applying the correction factors shown in the 0–2000 volt ampacitytables of Article 310 310.15(B) (1) . If this wiring is located above thermal insulation having a minimumthickness of 50 mm (2 in.), it shall be subject to the ambient correction of Table 310.15(B)(2)(a).


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The section was revised to comply with the reorganization of Article 310. The ambienttemperature above the insulation may be higher and may require ampacity de-rating of theconductors.

ResponseMessage:

SR-8010-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.


34 of 128 1/29/2019, 1:07 PM

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

The 2017 and prior Code text was intended to differentiate between wiring considered subject to local heatingdue to the operation of a heated ceiling and other wiring thermally isolated from that local heating. In an attempt toclarify 424.36, the Panel instead has introduced a potential lack of clarity on the intent of “subject to the ambientcorrection of Table 310.15(B)(2)(a).” The applicability of this Chapter 3 requirement for conductors for generalwiring is already understood but, as stated in 424.36, it can lead the reader to infer that ambient correction isalways required.


agree


35 of 128 1/29/2019, 1:07 PM

Second Revision No. 8012-NFPA 70-2018 [ Section No. 424.44(E) ]

(E) Ground-Fault Circuit-Interrupter Protection.

Ground In addition to the requirements in 210.8 , ground -fault circuit-interrupter protection for personnelshall be provided for cables installed in electrically heated floors of bathrooms and kitchens and inhydromassage bathtub locations.


Committee: NEC-P17


Committee Statement

Committee Statement: The text was changed to improve correlation, clarity and usability of the NEC.


Public Comment No. 1520-NFPA 70-2018 [Section No. 424.44(E)]

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.


36 of 128 1/29/2019, 1:07 PM

Agree with the Second Revision, and suggest editorial use of commas after “bathrooms” and “kitchens” instead ofrepeated use of “and.” “In addition to the requirements in 210.8, ground-fault circuit-interrupter protection forpersonnel shall be provided for cables installed in electrically heated floors of bathrooms, kitchens, and inhydromassage bathtub locations. “


agree


37 of 128 1/29/2019, 1:07 PM

Second Revision No. 8013-NFPA 70-2018 [ Section No. 424.45(D) ]

(D) Anchoring.

Heating cables shall be positioned and secured in place under the floor covering, per in accordance withthe manufacturer’s instructions.


Committee: NEC-P17


Committee Statement

Committee Statement: The text was changed to more formal usage.


Public Comment No. 2134-NFPA 70-2018 [Section No. 424.45(D)]

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.




38 of 128 1/29/2019, 1:07 PM

agree


39 of 128 1/29/2019, 1:07 PM

Second Revision No. 8014-NFPA 70-2018 [ Section No. 424.45(E) ]

(E) Ground-Fault Circuit-Interrupter Protection.

Ground In addition to the requirements in 210.8 , ground -fault circuit-interrupter protection for personnelshall be provided.


Committee: NEC-P17


Committee Statement

Committee Statement: The text was changed to improve correlation, clarity and usability of the NEC.



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.




40 of 128 1/29/2019, 1:07 PM

agree


41 of 128 1/29/2019, 1:07 PM


424.94 Clearances of Wiring in Ceilings.

Wiring located above heated ceilings shall be spaced not less than 50 mm (2 in.) above the heatedceiling. The ampacity shall be calculated on the basis of an assumed ambient temperature of at least notless than 50°C (122°F), applying the correction factors given in the 0–2000 volt ampacity tables of Article310 310.15(B) (1) . If this wiring is located above thermal insulations insulation having a minimumthickness of 50 mm (2 in.), it shall be subject to the ambient correction of Table 310.15(B)(2) (a) Table310.15(B)(1) .


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The section was revised to comply with the reorganization of Article 310. The ambienttemperature above the insulation may be higher and may require ampacity de-rating of theconductors. The word “insulations” was changed from plural to singular.

ResponseMessage:

SR-8016-NFPA 70-2018




Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai


42 of 128 1/29/2019, 1:07 PM

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

The 2017 and prior Code text was intended to differentiate between wiring considered subject to local heatingdue to the operation of a heated ceiling and other wiring thermally isolated from that local heating. In an attempt toclarify 424.94, the Panel instead has introduced a potential lack of clarity on the intent of “subject to the ambientcorrection of Table 310.15(B)(2)(a).” The applicability of this Chapter 3 requirement for conductors for generalwiring is already understood but, as stated in 424.94, it can lead the reader to infer that ambient correction isalways required.


agree


43 of 128 1/29/2019, 1:07 PM


424.95 Location of Branch-Circuit and Feeder Wiring in Walls.

(A) Exterior Walls.

Wiring methods shall comply with Article 300 and 310.14(A)(3).

(B) Interior Walls.

The ampacity of any wiring behind heating panels or heating panel sets located in interior walls orpartitions shall be calculated on the basis of an assumed ambient temperature of 40°C (104°F), applyingcorrection factors given in the 0–2000 volt ampacity tables of Article 310 Table 310.15(B)(1) .


Committee: NEC-P17


Committee Statement

CommitteeStatement:

This rewording eliminates whole-article cross-references discouraged in the Style Manual.This change is being made in response to PC 2222.

ResponseMessage:

SR-7854-NFPA 70-2018

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.


44 of 128 1/29/2019, 1:07 PM

Williams, Matt B.



agree


45 of 128 1/29/2019, 1:07 PM

Second Revision No. 8017-NFPA 70-2018 [ Section No. 424.99(B)(5) ]

(5) GFCI Protection.

Branch In addition to the requirements in 210.8 , branch circuits supplying the heating panel or heatingpanel sets shall have ground-fault circuit-interrupter protection for personnel.


Committee: NEC-P17


Committee Statement

Committee Statement: The text was changed to improve correlation, clarity and usability of the NEC


Public Comment No. 1526-NFPA 70-2018 [Section No. 424.99(B)(5)]

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.




46 of 128 1/29/2019, 1:07 PM

agree


47 of 128 1/29/2019, 1:07 PM


425.1 Scope.

This article covers fixed industrial process heating employing electric resistance or electrode heatingtechnology. For the purpose of this article, heating equipment shall includes boilers, electrode boilers,duct heaters, strip heaters, immersion heaters, process air heaters, or other fixed electric equipment usedfor industrial process heating. This article shall does not apply to heating and room air conditioning forpersonnel spaces covered by Article 424, fixed heating equipment for pipelines and vessels covered byArticle 427, induction and dielectric heating equipment covered by Article 665, and industrial furnacesincorporating silicon carbide, molybdenum, or graphite process heating elements and electric resistanceor electrode heating technology covered by Article 424.90.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Revised section 425.1 to remove the mandatory language “shall” and “shall not” from thescope statement to comply with the Style Manual.

ResponseMessage:

SR-7942-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.


48 of 128 1/29/2019, 1:07 PM

Williams, Matt B.


Cook, Donald R.

While I support removal of mandatory text for compliance with the style manual, I believe additional effort shouldbe made to alter the scope text. Should it be necessary to inform users of the Article of equipment that is notcovered? That list could expand significantly.


agree


49 of 128 1/29/2019, 1:07 PM


(A) Branch-Circuit Requirements.

Individual An individual branch circuits circuit shall be permitted to supply any volt-ampere or wattagerating of fixed industrial process heating equipment for which they are the branch circuit is rated.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The current use of the word “they” is ambiguous. The change clarifies the text. Refer to thechanges also made in SR 7977.

ResponseMessage:

SR-8018-NFPA 70-2018

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.




50 of 128 1/29/2019, 1:07 PM

agree


51 of 128 1/29/2019, 1:07 PM


(B) Location.

This nameplate shall be located so as to be permanent and shall be visible or accessible after installation.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The choice is between "visible" and "accessible" - the nameplate should be "permanent" ineither case.



Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

Agree with the Second Revision, and suggest editorial use of comma after “permanent” for increased clarity. “The


52 of 128 1/29/2019, 1:07 PM

nameplate shall be located so as to be permanent, and shall be visible or accessible after installation.


agree


53 of 128 1/29/2019, 1:07 PM


425.64 Limit Controls.

Each duct heater shall be provided with an approved, integral, automatic-reset temperature-limitingcontrol or controllers to de-energize the circuit or circuits. In addition, an integral independentsupplementary control or controllers shall be provided in each duct heater that disconnects a sufficientnumber of conductors to interrupt heating element current flow. This device shall be manually resettable orreplaceable.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

All equipment is required to be approved based on NEC 110.2. Repeating that requirementin 425.64 is not necessary.

ResponseMessage:

SR-7946-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


54 of 128 1/29/2019, 1:07 PM



agree


55 of 128 1/29/2019, 1:07 PM


425.82 Branch-Circuit Requirements.

The size of branch-circuit conductors and overcurrent protective devices shall be calculated on the basisof 125 percent of the total load (motors not included). A contactor, relay, or other device, listed forcontinuous operation at 100 percent of its rating, shall be permitted to supply its full-rated load. See210.19(A) 210.19(A)(1)(a) , Exception No. 1 . This section shall not apply to conductors that form anintegral part of an approved boiler.

Where an electrode boiler is rated 50 kW or more, the conductors supplying the boiler electrode(s) shallbe permitted to be sized at not less than 100 percent of the nameplate rating of the electrode boiler,provided all the following conditions are met:

(1) The electrode boiler is marked with a minimum conductor size.

(2) The conductors are not smaller than the marked minimum size.

(3) A temperature- or pressure-actuated switch controls the cyclic operation of the equipment.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

This section aligns 425.82 with the source content in 424.82. This was the panel's intent for the2017 and 2020 code and corrects the editorial error that was made.

ResponseMessage:

SR-7948-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


56 of 128 1/29/2019, 1:07 PM


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


57 of 128 1/29/2019, 1:07 PM


426.2 Definitions.

The definitions in this section shall apply only within this article.

Heating System.

A complete system consisting of components such as heating elements, fastening devices, nonheatingcircuit wiring, leads, temperature controllers, safety signs, junction boxes, raceways, and fittings.

Impedance Heating System.

A system in which heat is generated in an object, such as a pipe, or rod, or combination of pipes androds such objects serving as a heating element , by causing current to flow through the pipe or rod suchobjects by direct connection to an ac voltage source from an isolating transformer. The pipe or rod objectshall be permitted to be embedded in the surface to be heated, or constitute the exposed components tobe heated.

Resistance Heating Element.

A specific separate element to generate heat that is embedded in or fastened to the surface to be heated.

Informational Note: Tubular heaters, strip heaters, heating cable, heating tape, and heating panelsare examples of resistance heaters.

Skin-Effect Heating System.

A system in which heat is generated on the inner surface of a ferromagnetic envelope embedded in orfastened to the surface to be heated.

Informational Note: Typically, an electrically insulated conductor is routed through and connected tothe envelope at the other end. The envelope and the electrically insulated conductor are connectedto an ac voltage source from an isolating transformer.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The second revision clarifies that the "impedance heating element" can be other than a pipe orrod. The numbering has been updated per the NEC Style Manual.

ResponseMessage:

SR-7911-NFPA 70-2018

Public Comment No. 2098-NFPA 70-2018 [Section No. 426.2.2]

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention


58 of 128 1/29/2019, 1:07 PM

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


59 of 128 1/29/2019, 1:07 PM


426.22 Installation of Nonheating Leads for Embedded Equipment.

(A) Grounding Sheath or Braid.

All nonheating leads shall have a grounding sheath, braid, or other grounded physical protection and shallbe permitted to be embedded in the same manner as the heating cable without additional physicalprotection. The distance from the factory splice to raceway shall not be less than 25 mm (1 in.) or morethan 150 mm (6 in.). Except as permitted under 426.22(B) , nonheating leads installed in concrete,masonry, or asphalt shall be provided with a grounding sheath or braid in accordance with 426.27 orshall be enclosed in rigid metal conduit, electrical metallic tubing, intermediate metal conduit, or othermetal raceways.

(B) Splice Connections.

The splice connection between the nonheating lead and heating element, within concrete, masonry, orasphalt, shall be located no less than 25 mm (1 in.) and no more than 150 mm (6 in.) from the metalraceway. The length of the nonheating lead from the metal raceway to the splice assembly shall bepermitted to be provided without a grounding sheath or braid. Grounding continuity shall be maintained.

Global SR-7926

(C) Bushings.

Insulating bushings shall be used in the asphalt or masonryconcrete, masonry, or asphalt where theleads enter conduit or tubinga metal raceway.

(D) Expansion and Contraction.

Leads shall be protected in expansion joints in accordance with 300.4(H) or installed according to inaccordance with the manufacturer’s instructions.

(E) Emerging from Grade.

Exposed nonheating leads shall be protected by raceways or other identified means.

(F) Leads in Junction Boxes.

Not less than 150 mm (6 in.) of free nonheating lead shall be within the junction box.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The text was revised to minimize the potential for unintended consequences. The first revisionwould have required physical protection over the 1 to 6 inches between the splice and the metalraceway, which could have lead to heat from the heating element entering the metal raceway.

ResponseMessage:

SR-7915-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All


60 of 128 1/29/2019, 1:07 PM



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


61 of 128 1/29/2019, 1:07 PM


426.34 Grounding.

An impedance heating system that is operating at a voltage greater than 30 but not more than 80 shallbe grounded at a designated point(s).


Committee: NEC-P17


Committee Statement

Committee Statement: Section 426.34 describes voltages that are not permitted in Part IV.



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.




62 of 128 1/29/2019, 1:07 PM

agree


63 of 128 1/29/2019, 1:07 PM


426.40 Conductor Ampacity.

The current through the electrically insulated conductor inside the ferromagnetic envelope shall bepermitted to exceed the ampacity values shown in Article 310 Table 310.16 , provided it is identified assuitable for this use.


Committee: NEC-P17


Committee Statement

CommitteeStatement:


ResponseMessage:

SR-7855-NFPA 70-2018

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



64 of 128 1/29/2019, 1:07 PM


agree


65 of 128 1/29/2019, 1:07 PM


426.44 Equipment Grounding Conductor.

The ferromagnetic envelope shall be connected to an equipment grounding conductor at both ends; and,in addition, it shall be permitted to be connected to an equipment grounding conductor at intermediatepoints as required by its design.

Section 250.30 shall not apply to the installation of skin-effect heating systems.

Informational Note: For grounding methods, see Article 250 .


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Article 250 applies generally to all electrical installations and does not need to be referencedin an informational note.

ResponseMessage:

SR-7934-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.


66 of 128 1/29/2019, 1:07 PM

Williams, Matt B.



agree


67 of 128 1/29/2019, 1:07 PM


427.45 Conductor Ampacity.

The ampacity of the electrically insulated conductor inside the ferromagnetic envelope shall be permittedto exceed the values given in Article 310 Table 310.16 , provided it is identified as suitable for this use.


Committee: NEC-P17


Committee Statement

CommitteeStatement:


ResponseMessage:

SR-7857-NFPA 70-2018

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.




68 of 128 1/29/2019, 1:07 PM

agree


69 of 128 1/29/2019, 1:07 PM

Second Revision No. 8036-NFPA 70-2018 [ Definition: Corrosive Environment. ]

Corrosive Environment.

Areas where pool sanitation chemicals are stored, handled, or dispensed, and confined areas underdecks adjacent to such areas, as well as areas with circulation pumps, automatic chlorinators, filters, openareas under decks adjacent to or abutting the pool structure, and similar locations.

Informational Note: A corrosive environment is an environment that contains oxidizer chemicals orcorrosive substances that eat, erode, or wear away materials gradually by chemical action.Common corrosive substances include the following: Sanitation chemicals and pool water areconsidered to pose a risk of corrosion (gradually damage or destroy materials) due to the presenceof oxidizers (e.g., calcium hypochlorite, sodium hypochlorite, bromine, chlorinated isocyanurates)and chlorinating agents that release chlorine when dissolved in water. More information aboutswimming pool chemicals can be found on or in the following:

(0) Oxidizer is a substance that has the ability to oxidize other substances. Common oxidizers atswimming pool areas are calcium hypochlorite, sodium hypochlorite, bromine, andchlorinated isocyanurates, and they can exist as any state of matter, including liquids, solids,gases, mists, or vapors.

(0) Corrosive substance is one that will destroy and damage other substances with which itcomes into contact. Common corrosive substances at swimming pool storage areas arechlorinating agents that release chlorine when they are dissolved in the water.

(1) EPA website: https://www.epa.gov/sites/production/files/2013-11/documents/spalert.pdf Environmental Protection Agency website

(2) NFPA 430-2000 400 -2019 , Code for the Storage of Liquid and Solid Oxidizers HazardousMaterials Code , 16 pages

(3) Advisory: Swimming Pool Chemicals: Chlorine, OSWER 90-008.1, June 1990, available fromthe EPA National Service Center for Environmental Publications (NSCEP)


Committee: NEC-P17


Committee Statement

CommitteeStatement:

In the definition for Corrosive Environment, the website link was removed from the informationalnote, to comply with the NEC style manual. Additionally, text was removed that redefinedcorrosive environment in the Informational Note.

ResponseMessage:

SR-8036-NFPA 70-2018

Public Comment No. 725-NFPA 70-2018 [Definition: Corrosive Environment.]

Public Comment No. 1138-NFPA 70-2018 [Definition: Corrosive Environment.]

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All




70 of 128 1/29/2019, 1:07 PM

0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



This change is necessary to clarify what is meant by a corrosive environment in the specific context of pools andspas.


agree


71 of 128 1/29/2019, 1:07 PM

Second Revision No. 8044-NFPA 70-2018 [ Definition: Fountain. ]

Fountain.

Splash An ornamental structure or recreational water feature from which one or more jets or streams ofwater are discharged into the air, including splash pads, ornamental pools, display pools, and reflectionpools. The definition does not include drinking water fountains or water coolers.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Definition of Fountain was revised to elaborate which equipment type is considered afountain.


Public Comment No. 1450-NFPA 70-2018 [Definition: Fountain.]



Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


72 of 128 1/29/2019, 1:07 PM



This change was necessary to eliminate the use of the word "fountain" in the definition of itself, and to clarify thatsplash pads are fountains.


agree


73 of 128 1/29/2019, 1:07 PM

Second Revision No. 8049-NFPA 70-2018 [ Definition: Immersion Pool. ]

Immersion Pool.

A pool utilized for ceremonial or ritual immersion of users, that may be equipped with a heater, pump,and underwater luminaire. They are typically drained or discharged within a few days of use. They aregenerally installed indoors but may be installed outdoors, on the ground or supporting structure, or in theground or supporting structure. It generally contains integral interior steps and may be equipped with aheater and/or pump and, less commonly, an underwater luminaire. Portable heaters and pumps may beutilized even with permanently installed immersion pools. Generally, an immersion pool which is designedand intended to have its contents drained or discharged. after each use, although some immersion poolsare equipped to allow retention of water for more than a few days after use.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Definition of Immersion Pool simplified to be compliant with NEC style manual by removing anumber of prescriptive design details that were included in the definition.

ResponseMessage:

SR-8049-NFPA 70-2018

Public Comment No. 1136-NFPA 70-2018 [Definition: Immersion Pool.]

Public Comment No. 727-NFPA 70-2018 [Definition: Immersion Pool.]

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.


74 of 128 1/29/2019, 1:07 PM

Valdes, Marcelo E.

Williams, Matt B.



The addition of a definition and specific requirements for immersion pools is necessary to address the uniquecharacteristics of these installations.


agree


75 of 128 1/29/2019, 1:07 PM

Second Revision No. 8052-NFPA 70-2018 [ Definition: Splash Pad. ]

Splash Pad.

A fountain with a pool depth 25 mm (1 in.) or less, intended for recreational use by pedestrians. Splashpads typically incorporate one or more water spray jets and/or aboveground water spray features, andmost are zero depth (i.e., pool structure flush with the surrounding perimeter surface). This definition doesnot include showers intended for hygienic rinsing prior to use of a pool, spa, or other water feature.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The existing “splash pad” definition described features that may or may not be included. Theessential difference between a “splash pad” and other fountains is its shallow depth and“recreational use by pedestrians.” The definition was therefore simplified and revised to better alignwith NEC style manual.

ResponseMessage:

SR-8052-NFPA 70-2018

Public Comment No. 726-NFPA 70-2018 [Definition: Splash Pad.]

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


76 of 128 1/29/2019, 1:07 PM



The addition of a definition for splash pads is necessary to clarify which types of installations are consideredfountains.


agree


77 of 128 1/29/2019, 1:07 PM


680.4 Inspections After Installation.

The authority having jurisdiction shall be permitted to require inspection of the complete system forpermanently installed equipment periodically after installation to ensure systems are maintained in properoperating condition. periodic inspection and testing.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Title “Inspections after Installation” is being added to section 680.4 in accordance with NEC stylemanual. The vague and unenforceable language was removed. The word "testing" was added toclarify that testing can be performed as part of the inspection.

ResponseMessage:

SR-8057-NFPA 70-2018








Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.



78 of 128 1/29/2019, 1:07 PM

Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree



APSP must vote negative on the basis that the proposed section, while reflecting a noble motive, contains noenforceable language. That said, and so this negative vote is not misconstrued, for many years APSP and thiscommenter have strongly supported, encouraged, and assisted in facilitating periodic inspection and testing ofpool and spa electrical systems, including bonding and grounding, by both the private and government sectors.However, regarding this proposed change, APSP believes that other standards such as NFPA 70B, which directlyaddress electrical inspection and maintenance, are the more appropriate vehicle(s) for accomplishing thispurpose. APSP and this commenter strongly encourage AHJs and pool professionals to develop and implementviable periodic inspection and test programs for pools and spas, as such inspection and testing has beenrepeatedly demonstrated to enhance electrical safety.


79 of 128 1/29/2019, 1:07 PM


680.5 Ground-Fault Circuit Interrupters.

Ground-fault circuit interrupters (GFCIs) shall be self-contained units, circuit-breaker or receptacle types,or other listed types. The GFCI requirements in Article 680 , unless otherwise noted, are in addition to therequirements in 210.8 .


Committee: NEC-P17


Committee Statement

CommitteeStatement:

This change is being made to indicate that the GFCI related requirements in Article 680 are inaddition to and not in place of requirements in 210.8.

ResponseMessage:

SR-8103-NFPA 70-2018




Public Comment No. 1620-NFPA 70-2018 [Section No. 680.23(A)(3)]



Public Comment No. 1638-NFPA 70-2018 [Section No. 680.62(A) [Excluding any Sub-Sections]]







Public Comment No. 1631-NFPA 70-2018 [Section No. 680.44 [Excluding any Sub-Sections]]






Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



80 of 128 1/29/2019, 1:07 PM


0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


81 of 128 1/29/2019, 1:07 PM


680.6 Bonding and Equipment Grounding.

Electrical equipment shall be grounded bonded in accordance with Parts V, VI, Part V of Article 250 andshall meet the equipment grounding requirements of Parts VI and VII of Article 250 and connected by thewiring methods in Chapter 3, except as modified by this article. Equipment to be grounded includes, but isnot limited to, the following subject to these requirements includes the following :

(1) Through-wall lighting assemblies and underwater luminaires, other than those low-voltage lightingproducts listed for the application without an equipment grounding conductor

(2) All electrical equipment located within 1.5 m (5 ft) of the inside wall of the specified body of water

(3) All electrical equipment associated with the recirculating system of the specified body of water

(4) Junction boxes

(5) Transformer and power supply enclosures

(6) Ground-fault circuit interrupters

(7) Panelboards that are not part of the service equipment and that supply any electrical equipmentassociated with the specified body of water


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Title of 680.6 was revised to read “Bonding and Equipment Grounding” to more clearly account forthe requirements in this section. Additionally, revisions were made to clarify “bonded” vs “grounded”and the refenced other sections and Articles were corrected. Last, editorial change made tointroduction of equipment list.

ResponseMessage:

SR-8067-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

11 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Daniel, Jerry Lee



82 of 128 1/29/2019, 1:07 PM

Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Cook, Donald R.

While proposed revision may improve this existing requirement, I must question the need for this section. Most ofthe grounding and bonding in this Section is already required in Article 250. Those grounding and bondingrequirements are not supplementing or modifying the general rules. Additionally, I'm not sure how a ground-faultcircuit-interrupter could be grounded or bonded. Listed GFCI protection used in these applications is a componentenclosed in the nonmetallic body of a listed circuit breaker, or a listed receptacle or outlet type. I'm not sure howan equipment grounding conductor could be connected to the GFCI. While a negative vote would provide no valueat this point in the process, this may be an item that warrants additional consideration in the next cycle.


agree. However the wording could be corrected. Suggested text: 680.6 Bonding and Equipment Grounding. Non-current carrying metallic parts of electrical equipment shall be bonded in accordance with Part V of Article 250 andshall meet the equipment grounding requirements of Parts VI and VII of Article 250 and connected by the wiringmethods in Chapter 3, except as modified by this article. Equipment subject to these requirements includes thefollowing: 1. Through-wall lighting assemblies and underwater luminaires, other than those low-voltage lightingproducts listed for the application without an equipment grounding conductor 2. All electrical equipment locatedwithin 1.5 m (5 ft) of the inside wall of the specified body of water 3. All electrical equipment associated with therecirculating system of the specified body of water 4. Junction boxes 5. Transformer and power supply enclosures6. Ground-fault circuit interrupters 7. Panelboards that are not part of the service equipment and that supply anyelectrical equipment associated with the specified body of water



This change reintroduces considerable confusion into Code requirements for grounding, as Article 680 alsoincludes unique requirements for equipotential bonding, which are not intended to be incorporated in this sectionand are not covered by Article 250. It was precisely to eliminate this confusion that the term "equipotentialbonding" was substituted for the term "bonding" in 680 in the 2005 Edition, because "bonding" in the context ofgrounding and Article 250 did not apply to equipotential bonding and the requirements were being confused. Thischange simply adds back that same confusion.


83 of 128 1/29/2019, 1:07 PM


680.11 Underground Wiring Location .

Underground wiring shall comply with 680.11(A) through (C).

(A) Underground Wiring.

Underground wiring within 1.5 m (5 ft) horizontally from the inside wall of the pool shall be permitted. Thefollowing wiring systems methods shall be considered suitable for the conditions in these locations:

(1) Rigid metal conduit

(2) Intermediate metal conduit

(3) Rigid polyvinyl chloride conduit

(4) Reinforced thermosetting resin conduit

(5) Jacketed Type MC cable that is listed for burial use

(6) Liquidtight flexible nonmetallic conduit listed for direct burial use

(7) Liquidtight flexible metal conduit listed for direct burial use

(B) Wiring Under Pools.

Underground wiring shall not be permitted under the pool unless this wiring is necessary to supply poolequipment permitted by this article.

(C) Minimum Cover Requirements.

Minimum cover depths shall be as given in Table 300.5.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

For clarity and consistency with other text, the term “wiring systems” has been replaced with“wiring methods”.

To align with the NEC style manual, section titles were added to 680.11(A), (B), and (C), andan editorial change to the title of 680.11.

ResponseMessage:

SR-8071-NFPA 70-2018





Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All


84 of 128 1/29/2019, 1:07 PM



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



Agree. The panel should consider looking into the depth requirement in item "C" that refers to Table 300.5. Duringthe meetings for this cycle it was presented on several occasions issues with stray voltages. The reference toTable 300.5 would allow branch circuits to be installed at shallow depths in the pool area.


85 of 128 1/29/2019, 1:07 PM


680.14 Wiring Methods in Corrosive Environment.

Wiring methods in the areas described in 680.14(A) a corrosive environment shall be listed and identifiedfor use in such areas. Rigid metal conduit, intermediate metal conduit, rigid polyvinyl chloride conduit, andreinforced thermosetting resin conduit shall be considered to be resistant to the corrosive environment.specified in 680.14(A) .

(A) General.

Areas where pool sanitation chemicals are stored, as well as areas with circulation pumps, automaticchlorinators, filters, open areas under decks adjacent to or abutting the pool structure, and similarlocations shall be considered to be a corrosive environment. The air in such areas shall be consideredto be laden with acid, chlorine, and bromine vapors, or any combination of acid, chlorine, or brominevapors, and any liquids or condensation in those areas shall be considered to be laden with acids,chlorine, and bromine vapors, or any combination of acid, chlorine, or bromine vapors.

(B) Wiring Methods.

Wiring methods in the areas described in 680.14(A) shall be listed and identified for use in such areas.Rigid metal conduit, intermediate metal conduit, rigid polyvinyl chloride conduit, and reinforcedthermosetting resin conduit shall be considered to be resistant to the corrosive environment specified in680.14(A) .


Committee: NEC-P17

Submittal Date: Wed Oct 31 15:18:12 EDT 2018

Committee Statement

CommitteeStatement:

680.14 was revised to correlate with the new definition for corrosive environment that wasadded to 680.2.


Ballot Results


14 Eligible Voters

0 Not Returned

11 Affirmative All



0 Abstention

Affirmative All

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.



86 of 128 1/29/2019, 1:07 PM

Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

Agree with second revision, but the word “in” should not be struck out in the first line. “Wiring methods in acorrosive environment…….”

Cook, Donald R.

Where the word "in" is deleted in the first sentence appears to be a data entry error. Text should read: "Wiringmethods in a corrosive environment shall be listed and identified for use in such areas."


Agree with the intent however there is an error in the wording that should be corrected. Suggested text: Wiringmethods in a corrosive environment shall be listed and identified for use in such areas.


87 of 128 1/29/2019, 1:07 PM


(A) Wiring Methods.

The wiring to a pool motor shall comply with 680.21(A)(1) unless modified for specific circumstances by(A)(2) or (A)(3).

(1) General.

Wiring methods installed in a corrosive environment shall comply with 680.14 or shall be Type MC cablelisted for that location . Wiring methods installed in these locations shall contain an insulated copperequipment grounding conductor sized in accordance with Table 250.122 but not smaller than 12 AWG.

Where installed in noncorrosive environments, the wiring systems methods of branch circuits shall complywith the general requirements in Chapter 3.

(2) Flexible Connections.

Where necessary to employ flexible connections at or adjacent to the motor, liquidtight flexible metal orliquidtight flexible nonmetallic conduit with listed fittings shall be permitted.

(3) Cord-and-Plug Connections.

Pool-associated motors shall be permitted to employ cord-and-plug connections. The flexible cord shallnot exceed 900 mm (3 ft) in length. The flexible cord shall include a copper equipment groundingconductor sized in accordance with 250.122 but not smaller than 12 AWG. The cord shall terminate in agrounding-type attachment plug.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

For clarity and consistency with other text in same section, the term “wiring systems” has beenreplaced with “wiring methods”.

The use of Type MC cable listed as "suitable for use in swimming pool motor circuits" is notconsidered acceptable in all 680.14(B) applications. Instead, it is being added back into specificindividual sections where its use would be acceptable. Refer to changes made in SR 8084.

ResponseMessage:

SR-8090-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All


88 of 128 1/29/2019, 1:07 PM

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



The revision would allow type MC cable and does not specify the type of MC cable. Section 680.25 does notallow the use of aluminum and some types of MC cable are aluminum.


89 of 128 1/29/2019, 1:07 PM


(C) GFCI Protection.

Outlets supplying all pool motors on branch circuits rated 250 150 volts or less to ground and 60amperes or less, single- or 3-phase, shall be provided with Class A ground-fault circuit-interrupterprotection.

Exception: Listed low-voltage motors not requiring grounding, with ratings not exceeding the low-voltage contact limit that are supplied by listed transformers or power supplies that comply with680.23(A)(2) , shall be permitted to be installed without GFCI protection.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

In order to address the potential for pool or spa equipment to be connected to a branch circuit thatexceeds the rating of a GFCI (e.g. a 240 V corner-grounded-delta circuit exceeds150 V to ground),a Second Revision was made to include the 150 V-to-ground rating condition. It was also clarifiedthat the GFCI shall be a Class A type.

Second Revision as written would now require all motors, even low voltage motors which may havebeen previously excluded from GFCI requirement, to now be GFCI protected. These shouldcontinue to be excluded. Therefore, the exception is being added to clarify this.

GFCI protection for the circuits providing the outlets used for supplying pool pump motors is notbeing required because the risk is associated with the equipment and not the supply wires.

ResponseMessage:

SR-8095-NFPA 70-2018




Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee




90 of 128 1/29/2019, 1:07 PM

Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

The third paragraph of the Committee Statement is confusing. Since the Section addresses “outlets supplying allpool motors on branch circuits,” the statement can be understood as follows: “The required GFCI protection neednot include the branch circuit supplying a pool motor outlet because the risk is associated with the outlet, poolmotor and the wiring method between them and not the entire branch circuit.”


agree


91 of 128 1/29/2019, 1:07 PM


(A) Receptacles.

(1) Required Receptacle, Location.

Where a permanently installed pool is installed, no fewer than one 125-volt, 15- or 20-ampere receptacleon a general-purpose branch circuit shall be located not less than 1.83 m (6 ft) from, and not more than6.0 m (20 ft) from, the inside wall of the pool. This receptacle shall be located not more than 2.0 m (6 ft6 in.) above the floor, platform, or grade level serving the pool.

(2) Circulation and Sanitation System, Location.

Receptacles that provide power for water-pump motors or for other loads directly related to the circulationand sanitation system shall be located at least 1.83 m (6 ft) from the inside walls of the pool. Thesereceptacles shall have GFCI protection and be of the grounding type.

(3) Other Receptacles, Location.

Other receptacles shall be not less than 1.83 m (6 ft) from the inside walls of a pool.

(4) GFCI Protection.

All 15- and 20-ampere, single-phase, 125-volt receptacles located within 6.0 m (20 ft) of the inside walls ofa pool shall be provided with the following: protected by a Class A ground-fault circuit interrupter. Alsosee 680.22(A)(5) .

(0) Ground-fault circuit interrupter.

(0) At least one GFCI-protected receptacle on a general-purpose branch circuit shall be located withina pool equipment room.

(0) All receptacles within a pool equipment room shall be GFCI protected.

(5) Pool Equipment Room.

At least one GCFI-protected 125-volt, 15- or 20- ampere receptacle on a general-purpose circuit shallbe located within a pool equipment room, and all other receptacles supplied by branch circuits rated 150volts or less to ground within a pool equipment room shall be GFCI protected.

(6) Measurements.

In determining the dimensions in this section addressing receptacle spacings, the distance to bemeasured shall be the shortest path the supply cord of an appliance connected to the receptacle wouldfollow without piercing a floor, wall, ceiling, doorway with hinged or sliding door, window opening, or othereffective permanent barrier.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Section 680.22(A) is being revised to align with the NEC style manual and to read more clearly.


ResponseMessage:

SR-8128-NFPA 70-2018




92 of 128 1/29/2019, 1:07 PM


Public Comment No. 1886-NFPA 70-2018 [New Section after 680.22(A)(5)]


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


93 of 128 1/29/2019, 1:07 PM


(C) Switching Devices.

Switching devices shall be located at least 1.5 m (5 ft) horizontally from the inside walls of a pool unlessseparated from the pool by a solid fence, wall, or other permanent barrier that provides at least a 1.5 m (5ft) reach distance . Alternatively, a switch that is listed as being acceptable for use within 1.5 m (5 ft) shallbe permitted.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

680.22(C) was revised to better explain the 5 ft reach distance with regard to a permanentbarrier when the switch is located behind a wall, within a room, etc.

ResponseMessage:

SR-8106-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


94 of 128 1/29/2019, 1:07 PM



agree


95 of 128 1/29/2019, 1:07 PM


(6) Servicing.

Wet-niche luminaires shall be removable from the water for inspection, relamping, or other maintenance.The forming shell location and length of cord in the forming shell shall permit personnel to place theremoved luminaire on the deck or other dry location for such maintenance. The luminaire maintenancelocation shall be accessible without entering or going in the pool water.

In spa locations where spas lights wet-niche luminaires are installed low in the foot well of the spa, theluminaire shall only be required to reach the bench location, where the spa can be drained to make thebench location dry.


Committee: NEC-P17


Committee Statement

Committee Statement: the undefined term “spa lights” was replaced with defined term “wet-niche luminaires”.



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.


96 of 128 1/29/2019, 1:07 PM

Williams, Matt B.



agree


97 of 128 1/29/2019, 1:07 PM

Second Revision No. 8088-NFPA 70-2018 [ Section No. 680.23(F)(1) ]

(1) Wiring Methods.

Where branch-circuit wiring on the supply side of enclosures and junction boxes connected to conduitsrun to underwater luminaires are installed in corrosive environments as described in 680.2, the wiringmethod of that portion of the branch circuit shall be as required in accordance with 680.14(B) or shall beliquidtight flexible nonmetallic conduit . Wiring methods installed in corrosive environments as described in680.14 shall contain an insulated copper equipment grounding conductor sized in accordance with250.122, but not smaller than 12 AWG.

Where installed in noncorrosive environments, branch circuits shall comply with the general requirementsin Chapter 3.

Exception: Where connecting to transformers or power supplies for pool lights, liquidtight flexible metalconduit shall be permitted. The length shall not exceed 1.8 m (6 ft) for any one length or exceed 3.0 m(10 ft) in total length used.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The use of liquidtight flexible nonmetallic conduit is not considered acceptable in all 680.14(B)applications. Instead, it is being added back into specific individual sections where its use wouldbe acceptable. Refer to changes made in SR 8084.

ResponseMessage:

SR-8088-NFPA 70-2018

Public Comment No. 1820-NFPA 70-2018 [Section No. 680.23(F)(1)]

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.



98 of 128 1/29/2019, 1:07 PM

Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

Agree with Second Revision, however the reference back to 680.14(B) is no longer valid due to SR 8142 where(B) was removed. The correct reference should simply be to 680.14, not 680.14(B). Committee statement shouldalso be updated to say 680.14 instead of 680.14(B).


agree


99 of 128 1/29/2019, 1:07 PM

Second Revision No. 8113-NFPA 70-2018 [ Section No. 680.23(F)(2) ]

(2) Equipment Grounding.

Other than listed low-voltage luminaires not requiring grounding, all through-wall lighting assemblies, wet-niche, dry-niche, or no-niche luminaires shall be connected to an insulated copper equipment groundingconductor installed with the circuit conductors. The equipment grounding conductor shall be installedwithout joint or splice except as permitted in 680.23(F)(2)(a) and (F)(2)(b). The equipment groundingconductor shall be sized in accordance with 250.122 but shall not be smaller than 12 AWG.

Exception: An equipment grounding conductor between the wiring chamber of the secondary winding ofa transformer and a junction box shall be sized in accordance with the transformer secondaryovercurrent protection provided.

(a) If more than one underwater luminaire is supplied by the same branch circuit, the equipmentgrounding conductor, installed between the junction boxes, transformer enclosures, or other enclosures inthe supply circuit to wet-niche luminaires, or between the field-wiring compartments of dry-nicheluminaires, shall be permitted to be terminated on grounding terminals.

(b) If the underwater luminaire is supplied from a transformer, ground-fault circuit interrupter, clock-operated switch, or a manual snap switch that is located between the panelboard and a junction boxconnected to the conduit that extends directly to the underwater luminaire, the equipment groundingconductor shall be permitted to terminate on grounding terminals on the transformer, ground-fault circuitinterrupter, clock-operated switch enclosure, or an outlet box used to enclose a snap switch.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The exception refers to the equipment grounding conductor on the secondary side of a lowvoltage transformer and not to the branch circuit equipment grounding conductor. The text wasadded to clarify the intent.

ResponseMessage:

SR-8113-NFPA 70-2018

Public Comment No. 2024-NFPA 70-2018 [Section No. 680.23(F)(2)]

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.


100 of 128 1/29/2019, 1:07 PM

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



The existing provision (current 680.23(F)(2) Exception) was added in the 1971 cycle as part of a general rewriteand expansion of 680, and deals with equipment on the secondary side of a low voltage pool lighting transformeronly. This is the first time low voltage underwater pool lighting had been specifically addressed in 680. At thatpoint, this provision was 680-24(d) Exception No. 2. Specifically, the exception deals with a situation where a lowvoltage (15 Vac or less) lighting transformer feeds a low voltage underwater light through a J-box connecteddirectly to the conduit running to the fixture. This is clearer in the original 1971 language, as the exceptionspecifically references 680-24(a)(2) Exception No. 2, which exempts such an installation from being required tohave a continuous equipment grounding conductor (EGC) from the J-box directly to the panel as is required for a120V light; it instead allows the continuous EGC to extend only from the panel to the transformer enclosure, andnot to the J-box, which is now on the secondary side of the transformer and is energized at low voltage - 12-15Vac. Consequently, the EGC addressed in this exception is only on the low voltage (15 Vac or less) side of thetransformer (not the 120 V supply side branch circuit conductors), and it runs only between the transformerenclosure and the J-box. Between the J-box and the underwater luminaire, the EGC is required to be an integralpart of the luminaire’s cord if the fixture requires grounding. UL 379 section 16.1 requires integral overloadprotection for the outputs of a swimming pool transformer, with 3 exceptions: (1) Class 2 transformers (which arecurrent-limited) complying with UL 1310, (2) inherently current-limited transformers Class 2 and Class 3 complyingwith UL 5085-3, and (3) power supply circuits (which have secondary overcurrent protection) complying with 4.5 ofUL 379. Consequently, there is an “overcurrent device” in the secondary circuit of these devices, and since ULrequires either overcurrent protection or inherent current limiting, the secondary short circuit current would bedifferent than for the 120 V branch circuit serving the primary (120Vac) side of the transformer. It may also beuseful to note that UL WBDT.GuideInfo Luminaires and Forming Shells indicated that the maximum current ratingfor the luminaire supply circuit was limited to 25 A for a luminaire rated 15 Vac or less (i.e., a low voltage supplycircuit). Further, the 1971 panel referenced Table 250-95 (plus no smaller than 12 AWG) for sizing in the parentsection 680-24(d), in the same manner in which the current 2017 Edition 680.23(F)(2) references Table 250.122(plus no smaller than 12 AWG). This is true throughout the history of this specific provision. Had the variouspanels addressing NEC 680 intended that only the NEC 250 sizing be utilized at all points in the circuit, theexception for the secondary of a low voltage transformer would not have been necessary at any time, including1971. Instead, the existing language appears to be most consistent with a specific requirement that this secondarygrounding conductor (only between the transformer enclosure and J-box) be sized in accordance with thesecondary overcurrent device (i.e., the transformer secondary overcurrent protection/current limiting as requiredby UL) and not in accordance with the requirements in NEC 250, which were applied consistently to the 120 Vacbranch circuit throughout the history of this provision. Such a requirement recognizes the difference betweenconditions on the 120 V primary side of the transformer and those on the 12-15 Vac secondary side and, as such,would not need to be dependent upon the requirements in 250.122.


agree


101 of 128 1/29/2019, 1:07 PM


(A) Feeders.

Where feeders are installed in corrosive environments as described in 680.2 , Corrosive Environment ,the wiring method of that portion of the feeder shall be as required in accordance with 680.14(B) or shallbe liquidtight flexible nonmetallic conduit . Wiring methods installed in corrosive environments asdescribed in 680.14 shall contain an insulated copper equipment grounding conductor sized inaccordance with Table 250.122, but not smaller than 12 AWG.

Where installed in noncorrosive environments, feeders shall comply with the general requirements inChapter 3.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The use of liquidtight flexible nonmetallic conduit is not considered acceptable in all 680.14(B)applications. Instead, it is being added back into specific individual sections where its use wouldbe acceptable. Refer to changes made in SR 8084.

ResponseMessage:

SR-8084-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai


102 of 128 1/29/2019, 1:07 PM

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

Agree with Second Revision, however the reference back to 680.14(B) is no longer valid due to SR 8142 where(B) was removed. The correct reference should simply be to 680.14, not 680.14(B). Committee statement shouldalso be updated to say 680.14 instead of 680.14(B).


agree


103 of 128 1/29/2019, 1:07 PM


(2) Perimeter Surfaces.

The perimeter surface to be bonded shall be considered to extend for 1 m (3 ft) horizontally beyond theinside walls of the pool and shall include unpaved surfaces and other types of paving. Perimeter surfacesseparated from the pool by a permanent wall or building 1.5 m (5 ft) in height or more shall requireequipotential bonding only on the pool side of the permanent wall or building. Bonding to perimetersurfaces shall be provided as specified in 680.26(B)(2)(a), (B)(2)(b), or (B) (2)(b c ) and shall be attachedto the pool reinforcing steel or copper conductor grid at a minimum of four (4) points uniformly spacedaround the perimeter of the pool. For nonconductive pool shells, bonding at four points shall not berequired.

(a) Structural Reinforcing Steel. Structural reinforcing steel shall be bonded in accordance with680.26(B)(1)(a).

(b) Alternate Means. Copper Ring Where structural reinforcing steel is not available or isencapsulated in a nonconductive compound, a copper conductor(s) shall be utilized where the followingrequirements are met:

(1) At least one minimum 8 AWG bare solid copper conductor shall be provided.

(2) The conductors shall follow the contour of the perimeter surface.

(3) Only listed splices splicing devices or exothermic welding shall be permitted.

(4) The required conductor shall be 450 mm to 600 mm (18 in. to 24 in.) from the inside walls of the pool.

(5) The required conductor shall be secured within or under the perimeter surface 100 mm to 150 mm(4 in. to 6 in.) below the subgrade.

(c) Copper Grid . Where structural reinforcing steel is not available or is encapsulated in anonconductive compound, copper grid shall be utilized where the following requirements are met:

(1) The copper grid shall be constructed of 8 AWG solid bare copper and be arranged in accordancewith 680.26(B)(1) (b)(3).

(2) The copper grid shall follow the contour of the perimeter surface extending 1 m (3 ft) horizontallybeyond the inside walls of the pool.

(3) Only listed splicing devices or exothermic welding shall be permitted.

(4) The copper grid shall be secured within or under the deck or unpaved surfaces between 100 mm to150 mm (4 in. to 6 in.) below the subgrade.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Text was added to clarify that an equipotential grid is an acceptable means for reducingvoltage gradients in the pool area.

ResponseMessage:

SR-8126-NFPA 70-2018





104 of 128 1/29/2019, 1:07 PM

Ballot Results


14 Eligible Voters

0 Not Returned

9 Affirmative All



0 Abstention

Affirmative All

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


Blewitt, Thomas V.

Affirming the option of "c) Copper Grid" is not a reflection on the adequacy of the "b) Copper Ring" option that isconsidered suitable for the purpose of equipotential bonding. While the Copper Grid is not precluded by currentCode text, we understand from the Panel discussion that if one chooses to implement a grid there may be value tosome authorities having jurisdiction in standardizing the grid details. It is for this reason we support the SecondRevision.

Cook, Donald R.

While there is no technical reason to oppose this revision, it should be noted the option to use a copper grid ispermitted in the 2017 NEC. The additional text results in no change for installations.


The revised language clarifies that a copper grid is allowed be used for perimeter equipotential bonding, alongwith all other allowable methods. Use of a copper grid was never prohibited by the NEC and may be appropriate insome geographical areas with unique electrical issues, as this panel has noted on multiple occasions. The use ofstructural steel was retained. The use of a #8 ring for perimeter bonding was also retained, as this method hasbeen utilized in much of the country for 50 years without any reported injury or death that has been scientificallyshown to have resulted from its use.


agree


Shell, Kenneth M.

Data was presented at our panel meeting demonstrating that the copper ring installation method was significantlyless effective than the copper grid method for reducing voltage gradients around the pool deck area. Most, if notall, of the arguments in opposition to the grid method, such as difficulty in installing the grid around objects nearthe pool or deck, step off risks created at the edge of the protected area, lack of any demonstrated safety hazard,etc., are equally relevant for the ring method. If we believe that the mitigation of voltage gradients is important,than only one of the options proposed is effective and should be allowed. Why not require only the effective meshmethod and disallow the ineffective copper ring?


105 of 128 1/29/2019, 1:07 PM


680.35 Storable and Portable Immersion Pools.

Storable and portable immersion pools shall additionally comply with 680.35(A) through (G).

(A) Cord Connection for Self-Contained Storable and Portable Immersion Pools.

Self-contained storable and portable packaged immersion pools with listed, labeled, and identified integralpermanently attached switches and/or controls, pumps, and/or heaters, including circulation heaters, rated120 volts and 20 amperes or less, single phase, shall be permitted to be cord-and-plug-connected with acord not shorter than 1.83 m (6 ft) and not longer than 4.6 m (15 ft), and shall be protected by a ground-fault circuit interrupter. The cord shall be a minimum junior hard service usage . If the ground-fault circuitinterrupter is provided as an integral part of the cord assembly, it shall be located at the attachment plug orin the power supply cord within 300 mm (12 in.) of the attachment plug.

(B) Storable and Portable Pumps.

A cord-connected storable or portable pump utilized with, but not built-in or permanently attached as anintegral part of, a storable or portable immersion pool, shall be listed, labeled, and identified for swimmingpool and spa use, and shall meet the requirements of 680.31.

(C) Storable and Portable Heaters.

A storable or portable heater, including circulation heaters, utilized with, but not built-in or permanentlyattached as an integral part of, a storable or portable immersion pool, shall be rated 120 volts and 20amperes or less or 250 volts and 30 amperes or less, single phase; shall be listed, labeled, and identifiedfor swimming pool and spa use; shall be permitted to be cord-and-plug-connected with a cord not shorterthan 1.83 m (6 ft) and not longer than 4.6 m (15 ft) where protected by a ground-fault circuit interrupter. ;and heaters supplied by branch circuits rated 150 volts or less to ground shall be provided with Class Aground-fault circuit-interrupter protection. The cord shall be a minimum junior hard service usage . If theground-fault circuit interrupter is provided as an integral part of the cord assembly, it shall be located at theattachment plug or in the power supply cord within 300 mm (12 in.) of the attachment plug.

(D) Audio Equipment.

Audio equipment shall not be installed in or on a self-contained storable or portable immersion pool. Allaudio equipment operating at greater than the low-voltage contact limit and located within 1.83 m (6 ft)from the inside walls of a storable or portable immersion pool shall be grounded and shall be protected bya ground-fault circuit interrupter.

(E) Location Proximate to Luminaires, Lighting Outlets, and Ceiling-Suspended (Paddle) Fans.

The storable or portable immersion pool shall be installed at least 3 m (10 ft), measured diagonally fromthe nearest point on each luminaire, lighting outlet, and ceiling-suspended (paddle) fan operating atgreater than the low-voltage contact limit, to the nearest point on the top rim of the immersion pool.Luminaires shall not be installed in or on a storable or portable immersion pool.

(F) Location Proximate to Switches.

The storable or portable immersion pool shall be installed at least 1.5 m (5 ft), measured horizontally, fromall switches operating above the low-voltage contact limit. Switches that are packaged with the immersionpool as an integral part of its internal electrical system, or that are integral to cord-and-plug-connectedelectrical equipment utilized in the pool’s water circulation or drain system, including storable and portablepumps, heaters, and circulation heaters, shall be permitted to be located less than 1.5 m (5 ft) from theinside walls of the pool.

(G) Receptacles.

All receptacles rated 250 volts, 50 amperes or less, located within 6.0 m (20 ft) of the inside walls of theinstalled storable or portable immersion pool and utilized for supplying power to heaters or other electricalequipment serving the immersion pool, shall meet the requirements of 680.32 and 680.34.


Committee: NEC-P17



106 of 128 1/29/2019, 1:07 PM

Committee Statement

CommitteeStatement:

Text of 680.35 revised to be more in line with style manual. 680.35(A) end of first sentence revisedto add the word “shall”. 680.35(C) revised to clarify that connection to a GFCI is required and notoptional. "Junior Hard Service" was changed to "Hard Usage" to correlate with Table 400.4. Clarifiedthat GFCI protection is only required for heaters on a branch circuit rated 150 volts or less to ground."Listed, labeled" was removed because it is already covered in 680.4.

ResponseMessage:

SR-8131-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

11 Affirmative All



0 Abstention

Affirmative All

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



The addition of specific requirements for portable and storable immersion pools is necessary to address theunique characteristics of these installations. However, it is suggested that the word "diagonally" in 680.35(E) bereplaced by "in a straight line" or similar to address potential confusion which was noted after the Panel's seconddraft meeting.


agree


Blewitt, Thomas V.

We agree with the Second Revision except for Sub-section (E) which is confusingly worded: “The storable orportable immersion pool shall be installed at least 3 m (10 ft), measured diagonally from the nearest point on eachluminaire, … to the nearest point on the top rim of the immersion pool…” As written, it is unclear whether the(luminaire, lighting outlet, ceiling-suspended (paddle) fan) can be located directly over the storable or portable


107 of 128 1/29/2019, 1:07 PM

immersion pool. It is also conceivable that a pool may be large enough such that the “top rim” meets the 10 ftrequirement but the (luminaire, lighting outlet, ceiling-suspended (paddle) fan) may be less than 10 ft from the poolwater level. The following changes to 680.35 Sub-section (E) are proposed to address these issues: "The storableor portable immersion pool shall be installed at least 3 m (10 ft), measured from the nearest point on eachluminaire, lighting outlet, and ceiling-suspended (paddle) fan operating at greater than the low-voltage contactlimit, to the water surface of the immersion pool filled to its maximum water level. Luminaires shall not be installedin or on a storable or portable immersion pool."


108 of 128 1/29/2019, 1:07 PM

Second Revision No. 8134-NFPA 70-2018 [ Section No. 680.43(F) ]

(F) Grounding.

The following equipment shall be grounded connected to the equipment grounding conductor :

(1) All electrical equipment located within 1.5 m (5 ft) of the inside wall of the spa or hot tub

(2) All electrical equipment associated with the circulating system of the spa or hot tub

Exception to (1) and (2): Electrical equipment listed for operation at the low-voltage contact limit orless and supplied by a transformer or power supply that complies with 680.23(A)(2) shall not berequired to be grounded. connected to the equipment grounding conductor.


Committee: NEC-P17


Committee Statement

Committee Statement: Text was revised for clarification and consistency with other sections including 680.62(D).


Public Comment No. 355-NFPA 70-2018 [Section No. 680.43(F)]

Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.


109 of 128 1/29/2019, 1:07 PM

Williams, Matt B.



The intention of the revision is good however it could be worded more correctly. Suggested text: (F) Grounding.The non-current carrying metallic parts following equipment shall be connected to the equipment groundingconductor: 1. All electrical equipment located within 1.5 m (5 ft) of the inside wall of the spa or hot tub 2. Allelectrical equipment associated with the circulating system of the spa or hot tub Exception to (1) and (2): Electricalequipment listed for operation at the low-voltage contact limit or less and supplied by a transformer or powersupply that complies with 680.23(A)(2) shall not be required to be connected to the equipment groundingconductor.


110 of 128 1/29/2019, 1:07 PM


680.45 Permanently Installed Immersion Pools.

Electrical installations at permanently installed immersion pools, whether installed indoors or outdoors,shall comply with the provisions of Part I, Part II, and Part IV of this article except as modified by thissection and shall be connected by the wiring methods of Chapter 3. With regard to provisions in Part IV ofthis article, an immersion pool shall be considered to be a spa or hot tub.

Exception No. 1: The equipotential bonding requirements in 680.26(B) shall not apply to immersionpools that incorporate no permanently installed or permanently connected electrical equipment, and thatare installed with all portions located on or above a finished floor.

Exception No. 2: The equipotential bonding requirements for perimeter surfaces in 680.26(B)(2) shall notapply to nonconductive perimeter surfaces, such as steps, treads, and walking surfaces made offiberglass composite.

(A) Cord-and-Plug Connections.

To facilitate the removal or disconnection of the unit(s) for maintenance, storage, and repair, self-contained portable packaged immersion pools with listed and labeled, integral pumps and/or heaters,including circulation heaters, rated 120 volts and 20 amperes or less shall be permitted to be cord-and-plug-connected with a cord not shorter than 1.83 m (6 ft) and not longer than 4.6 m (15 ft) where and shallbe protected by a ground-fault circuit interrupter. The cord shall ground all non-current-carrying metalparts of the electrical equipment. The means for grounding shall be an equipment grounding conductorrun with the power-supply conductors in the flexible cord that is properly terminated in a grounding-typeattachment plug having a fixed grounding contact member. If the ground-fault circuit interrupter is providedas an integral part of the cord assembly, it shall be located at the attachment plug or in the power-supplycord within 300 mm (12 in.) of the attachment plug.

(B) Storable and Portable Pumps.

A cord-connected storable or portable pump utilized with, but not built-in or permanently attached as anintegral part of, a permanently installed immersion pool, shall be listed, labeled, and identified forswimming pool and spa use. It shall incorporate an approved system of double insulation or its equivalentand shall be provided with means for grounding only the internal and nonaccessible non-current-carryingmetal parts of the appliance. The means for grounding shall be an equipment grounding conductor runwith the power-supply conductors in the flexible cord that is properly terminated in a grounding-typeattachment plug having a fixed grounding contact member. Cord-connected pool filter pumps shall beprovided with a ground-fault circuit interrupter that is an integral part of the attachment plug or located inthe power-supply cord within 300 mm (12 in.) of the attachment plug.

(C) Heaters.

Heaters used with permanently installed immersion pools shall comply with either 680.45(C)(1) or (C) (2).

(1) Permanently Installed Heaters.

A permanently installed heater, including immersion heaters, circulation heaters, and combination pump-heater units, built-in or permanently attached as an integral part of a permanently installed immersionpool, rated 120 volts or 250 volts, shall be listed, labeled, and identified for swimming pool and spa use;shall be grounded and bonded; and shall be protected by a heaters supplied by branch circuits rated 150volts or less to ground shall be provided with Class A ground-fault circuit-interrupter protection .Permanently installed immersion heaters, rated 120 volts and 20 amperes or less or 250 volts and 30amperes or less, single phase, are permitted to be cord-and-plug-connected with a cord not shorter than1.83 m (6 ft) and not longer than 4.6 m (15 ft) where , shall be protected by a ground-fault circuitinterrupter, and shall be provided with means for grounding all non-current-carrying metal parts of theappliance. The means for grounding shall be an equipment grounding conductor run with the power-supply conductors in the flexible cord that is properly terminated in a grounding-type attachment plughaving a fixed grounding contact member. If the ground-fault circuit interrupter is provided as an integralpart of the cord assembly, it shall be located at the attachment plug or in the power-supply cord within 300mm (12 in.) of the attachment plug.


111 of 128 1/29/2019, 1:07 PM

(2) Storable and Portable Heaters.

A cord-connected storable or portable heater, including immersion heaters, circulation heaters, andcombination pump-heater units, utilized with, but not permanently installed or attached as an integral partof a permanently installed immersion pool, rated 120 volts and 20 amperes or less or 250 volts and 30amperes or less, single phase, shall be listed, labeled, and identified for swimming pool and spa use;shall be permitted to be cord-and-plug-connected with a cord not shorter than 1.83 m (6 ft) and not longerthan 4.6 m (15 ft) where protected by a , heaters supplied by branch circuits rated 150 volts or less toground shall be provided with Class A ground-fault circuit-interrupter protection , and shall be providedwith means for grounding all non-current-carrying metal parts of the appliance. The means for groundingshall be an equipment grounding conductor run with the power-supply conductors in the flexible cord thatis properly terminated in a grounding-type attachment plug having a fixed grounding contact member. Ifthe ground-fault circuit interrupter is provided as an integral part of the cord assembly, it shall be located atthe attachment plug or in the power-supply cord within 300 mm (12 in.) of the attachment plug.

(D) Audio Equipment.

Audio equipment shall not be installed in or on a permanently installed immersion pool. All audioequipment operating at greater than the low-voltage contact limit and located within 1.83 m (6 ft) from theinside walls of a permanently installed immersion pool shall be grounded connected to the equipmentgrounding conductor and protected by a ground-fault circuit interrupter.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Text of 680.45 was revised to be in line with the style manual. Additional changes were made toclarify the grounding method.


ResponseMessage:

SR-8135-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian


112 of 128 1/29/2019, 1:07 PM

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



The addition of specific requirements for permanently installed immersion pools is necessary to address theunique characteristics of these installations. Additionally, in 680.45(A) in the first sentence between "repair," and"self-contained", the words "permanently installed" should be be inserted to eliminate confusion; 680.45(A)wasintended to address situations where self-contained portable or storable immersion pools are permanentlyinstalled in a facility (usually by connecting the outside frame or walls to a floor or wall with brackets and/or bolts).


agree


113 of 128 1/29/2019, 1:07 PM


(B) Underwater Junction Boxes and Other Underwater Enclosures.

Junction boxes and other underwater enclosures shall meet the requirements of 680.52(B)(1) and (B)(2).

(1) Construction.

(a) Underwater enclosures shall be equipped with provisions for threaded conduit entries orcompression glands or seals for cord entry.

(b) Underwater enclosures shall be listed and rated for prolonged submersion and made of copper,brass, or suitable other corrosion-resistant material.

Informational Note: See Table 110.28 .

(2) Installation.

Underwater enclosure installations shall comply with 680.52(B)(2)(a) and (B)(2)(b).

(a) Underwater enclosures shall be filled with a listed potting compound to prevent the entry ofmoisture.

(b) Underwater enclosures shall be firmly attached to the supports or directly to the fountain surfaceand bonded as required. Where the junction box is supported only by conduits in accordance with314.23(E) and (F), the conduits shall be of copper, brass, stainless steel, or other suitable corrosion-resistant metal. Where the box is fed by nonmetallic conduit, it shall have additional supports and fastenersof copper, brass, or other suitable corrosion-resistant material.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Revised text in 680.52(B)(1) to change the word “suitable” to “other” to comply with the NECstyle manual. The informational note has been removed because it is already covered in 90.3.

ResponseMessage:

SR-8137-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All


114 of 128 1/29/2019, 1:07 PM

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


115 of 128 1/29/2019, 1:07 PM


680.54 Grounding and Bonding .

(A) Grounding.

The following equipment shall be grounded connected to the equipment grounding conductor :

(1) Other than listed low-voltage luminaires not requiring grounding, all electrical equipment locatedwithin the fountain or within 1.5 m (5 ft) of the inside wall of the fountain

(2) All electrical equipment associated with the recirculating system of the fountain

(3) Panelboards that are not part of the service equipment and that supply any electrical equipmentassociated with the fountain

Informational Note: See 250.122 for sizing of these conductors.

(B) Bonding.

The following parts shall be bonded together and connected to an equipment grounding conductor on abranch circuit supplying the fountain:

(1) All metal piping systems associated with the fountain

(2) All metal fittings within or attached to the fountain

(3) Metal parts of electrical equipment associated with the fountain water-circulating system, includingpump motors

(4) Metal raceways that are within 1.5 m (5 ft) of the inside wall or perimeter of the fountain and thatare not separated from the fountain by a permanent barrier

(5) All metal surfaces that are within 1.5 m (5 ft) of the inside wall or perimeter of the fountain and thatare not separated from the fountain by a permanent barrier

(6) Electrical devices and controls that are not associated with the fountain and are located less than1.5 m (5 ft) of the inside wall or perimeter of the fountain


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The text is being revised such that the grounding and bonding requirements are included into asingle section, but separated into two subdivisions. This revision also correlates the bonding textfor fountains with those in 680.43 (D) for spas and hot tubs. Clarification was made to the bondingrequirements.

ResponseMessage:

SR-8138-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All


116 of 128 1/29/2019, 1:07 PM



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



The intention of the revision is good however it could be worded more correctly. Suggested text: 680.54Grounding and Bonding. (A) Grounding. The non-current carrying metal parts of following equipment shall beconnected to the equipment grounding conductor: 1. Other than listed low-voltage luminaires not requiringgrounding, all electrical equipment located within the fountain or within 1.5 m (5 ft) of the inside wall of the fountain2. All electrical equipment associated with the recirculating system of the fountain 3. Panelboards that are not partof the service equipment and that supply any electrical equipment associated with the fountain (B) Bonding. Thefollowing parts shall be bonded together and connected to an the equipment grounding conductor on a the branchcircuit supplying the fountain: 1. All metal piping systems associated with the fountain 2. All metal fittings within orattached to the fountain 3. Metal parts of electrical equipment associated with the fountain water-circulatingsystem, including pump motors 4. Metal raceways that are within 1.5 m (5 ft) of the inside wall or perimeter of thefountain and that are not separated from the fountain by a permanent barrier 5. All metal surfaces that are within1.5 m (5 ft) of the inside wall or perimeter of the fountain and that are not separated from the fountain by apermanent barrier


117 of 128 1/29/2019, 1:07 PM


680.80 General.

Electrically powered pool lifts as defined in 680.2 shall comply with Part VIII of this article. Part VIII shallnot be subject to the requirements of other parts of this article except where the requirements arespecifically referenced.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Clarified that Part VIII only applies to electrically powered pool lifts except wherespecifically referenced.



Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



118 of 128 1/29/2019, 1:07 PM


agree


119 of 128 1/29/2019, 1:07 PM

Second Revision No. 8140-NFPA 70-2018 [ Sections 680.82, 680.83, 680.84 ]

680.82 Protection.

Pool lifts connected to premises wiring and operated above the low-voltage contact limit shall be providedwith GFCI protection for personnel. and comply with 680.5 .

680.83 Bonding.

Lifts shall be bonded in accordance with 680.26(B)(5) and (B)(7).

680.84 Switching Devices and Receptacles .

Switches and switching devices that are operated above the low-voltage contact limit shall comply with680.22(C). Receptacles for electrically powered pool lifts that are operated above the low-voltage contactlimit shall comply with 680.22(A)(3) and (A)(4).


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Revisions are being made to 680.82 to remove “for personnel” since this is redundant due to GFCIDefinition and to add a reference to 680.5. Revisions being made to 680.84 reference theappropriate receptacle requirements for the installation and correlates with second revision 8139.

ResponseMessage:

SR-8140-NFPA 70-2018


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.


120 of 128 1/29/2019, 1:07 PM

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


121 of 128 1/29/2019, 1:07 PM

Second Revision No. 8143-NFPA 70-2018 [ New Section after 682.3 ]

682.4 Industrial Application.

This article shall not apply in industrial applications where there is alarm indication of equipment faultsand the following conditions are in place:

(1) Conditions of maintenance and supervision ensure that only qualified persons service and operatethe installed systems.

(2) Continued circuit operation is necessary for safe operation of equipment or processes.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

This revision provides clarity that this article is not meant to include specific industrial processapplications. This change was proposed in CI-8921.

ResponseMessage:

SR-8143-NFPA 70-2018

Ballot Results


14 Eligible Voters

0 Not Returned

12 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee


Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.


122 of 128 1/29/2019, 1:07 PM



This change is a necessary improvement, but additional changes are needed to address other situations, such asareas below the datum plane but protected by dams, dikes, sea walls, and other similar barriers.


agree


123 of 128 1/29/2019, 1:07 PM


682.15 Ground-Fault Protection.

The GFCI requirements in Article 682, unless otherwise noted, shall be in addition to the requirements in210.8 . Ground-fault protection shall be provided in accordance with 682.15(A) and (B). The protectiondevice shall be located not less than 300 mm (12 in.) above the established electrical datum plane.

(A) Outlets.

Outlets rated not more than supplied by branch circuits not exceeding 150 volts to ground and 60amperes at 120 through 250 volts , single-phase, shall be provided with GFCI Class A ground-faultcircuit-interrupter protection.

(B) Feeder and Branch Circuits on Piers.

Feeder and branch-circuit conductors that are installed on piers shall be provided with ground-faultprotection not exceeding 30 mA. Coordination with downstream ground-fault protection shall be permittedat the feeder overcurrent protective device.

Exception No. 1: Transformer secondary conductors of a separately derived ac system, operating atvoltages not exceeding 15 volts ac, that do not exceed 3 m (10 ft) and are installed in a raceway shallbe permitted to be installed without ground-fault protection. This exception shall also apply to the supplyterminals of the equipment supplied by the transformer secondary conductors.

Exception No. 2: Low-voltage circuits not requiring grounding, not exceeding the low-voltage contactlimit as defined in 680.2, and supplied by listed transformers or power supplies that comply with680.23(A)(2) shall be permitted to be installed without ground-fault protection.


Committee: NEC-P17


Committee Statement

CommitteeStatement:

Exceptions 1 and 2 were moved from the Section 682.15 to the first level subdivision 682.15(B) toindicate where these exceptions apply. There was a typo in the first revision that added "not" before"exceeding 15 volts ac" that was removed.

A Second Revision for correlation, clarity, usability and standardized format when referencingSection 210.8 in 682.15 has been made.


ResponseMessage:

SR-8023-NFPA 70-2018



Ballot Results


14 Eligible Voters

0 Not Returned


124 of 128 1/29/2019, 1:07 PM

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


125 of 128 1/29/2019, 1:07 PM


(B) Areas Not Requiring Equipotential Planes.

Equipotential planes shall not be required for the controlled equipment supplied by the service equipmentor disconnecting means. All circuits rated not more than 60 amperes at 120 through 250 volts, singlephase, shall have GFCI protection.


Committee: NEC-P17


Committee Statement

Committee Statement: The second sentence was removed because ground-fault protection is covered in 682.15.


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.




126 of 128 1/29/2019, 1:07 PM

agree


127 of 128 1/29/2019, 1:07 PM

Second Revision No. 8136-NFPA 70-2018 [ Part IV. ]

Part IV. Spas and , Hot Tubs, and Permanently Installed Immersion Pools


Committee: NEC-P17


Committee Statement

CommitteeStatement:

The title of Part IV was revised to reflect the addition of permanently installed immersionpools in 680.45.


Ballot Results


14 Eligible Voters

0 Not Returned

13 Affirmative All



0 Abstention

Affirmative All

Blewitt, Thomas V.

Cook, Donald R.

Daniel, Jerry Lee



Myers, Brian

O?Brien, Timothy R.


Shell, Kenneth M.

Siu, Kam Fai

Swim, Peter C.

Valdes, Marcelo E.

Williams, Matt B.



agree


128 of 128 1/29/2019, 1:07 PM

to: code-making panel 17 - nfpa...422.41 cord-and-plug-connected appliances subject to immersion....

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