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T&D PowerSkills Lineman Training Edition II

Page 1

Cable Splicing - Part 1

Edition II

Copyright MMVII

T&D PowerSkills, LLC

5501-A John Eskew Blvd.

Alexandria, LA 71303

866-880-1380

All rights reserved. This book or any part thereofmust not be reproduced in any form without the

written permission of T&D PowerSkills, LLC.

Printed in the United States of America


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T&D PowerSkillsGeneral Guidelines for Students

This training unit is composed of a DVD and associated Student Manual. The DVD contains one

Course. The course is divided into Lessons, where each Lesson consists of a number ofTopics.

The number of Lessons and Topics will vary with each course.

Recommended Sequence of Instruction

1. After the instructors introductory remarks, read the segment objectives found in the block at

the beginning of the first segment.

2. Briefly discuss the segment objectives with the instructor and other class members.3. View the first segment of the DVD.

4. Read the text segment that corresponds to the first segment of the DVD.5. Answer the questions at the end of the text segment. Check your answers with the correct

answers provided by the instructor.

6. Participate in a class discussion of the material just covered. Ask any questions you mighthave concerning the material in the DVD and the text, and note any additional information

given by the instructor.

7. Before proceeding, be sure you understand the concepts presented in this segment.8. Work through all segments in this manner.

9. A Course Test covering all the material will be administered by the instructor uponcompletion of the unit.

10.Additional instruction and testing may be provided, at the instructors discretion.

OSHA Regulations Snap-Shot

OSHA Regulations, primarily in 1926.955, 1910.269 and 1910.268 will be used in conjunction

with this training unit. Where applicable, regulations will be highlighted and placed in a box like

this. Instructors and students are expected to review the current OSHA Regulations to

familiarize the student with the safety requirements expected by USDOL OSHA, specifically as

they relate to the topic being discussed. This information is an important part of this training

unit.

This T&D PowerSkills workbook is designed to be

used in conjunction with the associated training DVD/video.


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Field PerformanceField PerformanceField PerformanceField Performance RequirementsRequirementsRequirementsRequirements (FPR)

NAME: _____________________________ #___________

Complete

Incomplete

SECTION: Underground Residential Distribution

UNIT(S): Cable Splicing Part 1

VG = Very GoodACC = AcceptableNI = Needs ImprovementNA = Not Able to Complete

on this Crew

REQUIREMENTS SUPERVISOR SIGN-OFF

VG ACC NI NASEGMENT 1 TYPES OF ELECTRICAL URD CABLE

1.1 Can identify the major parts of a primary cable .

SEGMENT 2 VOLTAGE STRESS AND STRESS RELIEF

2.1 Can explain what voltage stress is

2.2 Can explain how a layered cable design helps to counteract theeffects of voltage stress .

2.3 Can explain how a layered cable design helps to provide for therelief of static charges

SEGMENT 3 CABLE PREPARATION

3.1 Can demonstrate one method of preparing primary cable for a tapesplice .

3.2 Can identify equipment and how it can be used to prepare primarycable for a tape splice .

___________________________ __________________________________________

Employees Signature Supervisors SignatureDate


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Performance Notes: ____________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

1910.269(a)(2)(vii) as of July, 2006:

The employer shall certify that each employee has received the training required by paragraph

(a)(2) of this section. This certification shall be made when the employee demonstrates

proficiency in the work practices involved and shall be maintained for the duration of the

employees employment.

Note: Employment records that indicate that an employee has received the required training are

an acceptable means of meeting this requirement.


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TABLE OF COTETS

Section Title Page

1.1 Electrical Cable 6

1.2 Voltage Stress and Stress Relief 12

1.2.1 Voltage Stress 12

1.2.2 Stress Relief 16

1.2.3 Other Cable Design Considerations 16

1.3 Cable Preparation 18

1.3.1 General Considerations 18

1.3.2 Preparation for a Tape Splice 19


1910.269 (c) Job Briefing (as of ovember, 2006)

The employer shall ensure that the employee in charge conducts a job briefing with employees involved

before they start each job. The briefing shall cover at least the following subjects: hazards associated

with the job, work procedures involved, special precautions, energy source controls, and personal

protective equipment requirements.

1. umber of briefings. If the work or operations to be performed during the work day or shift are repetitive a

similar, at least one job briefing shall be conducted before the start of the first job of each day or shift.

Additional job briefings shall be held if significant changes, which might affect the safety of the employees,

occur during the course of the work.2. Extent of briefing. A brief discussion is satisfactory if the work involved is routine and if the employee, by

virtue of training and experience, can reasonably be expected to recognize and avoid the hazards involved in th

job. A more extensive discussion shall be conducted:

(i) if the work is complicated or particularly hazardous, or(ii) if the employee cannot be expected to recognize and avoid the hazards involved in the job.


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LIST OF ILLUSTRATIOS

Figure Title Page

1.1-1. Stranded Aluminum Conductor 6

1.1-2. Secondary Cable Insulation 7

1.1-3. Primary Cable Layers 8

1.1-4. Primary Cable Without a Jacket 10

1.2-1. Voltage Stress Lines 13

1.2-2. Conductor Shield Layer and Stress Lines 14

1.2-3. Insulation Shield Layer and Evenly Distributed Stress Lines 15

1.2-4. Concentric Wire Shielding 16

1.3-1. Cable Ends Overlapped 19

1.3-2. Workman Measuring from Center Line 20

1.3-3. Concentric Wires Twisted Out of the Way 21

1.3-4. Workman Making Final Cable Cut with a Cable Cutter 22

1.3-5. Removing the Insulation Shield Layer 23

1.3-6. Nylon String Used to Help Remove Primary Insulation

and Conductor Shield Layers

24

1.3-7. Tapering Primary Insulation 25


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CABLE SPLICIG - Part 1

Cable splicing is the process of joining two cable ends together while maintaining the cables

original design characteristics. Properly made splices are essential in keeping T&D systems

reliable. This training unit focuses on several aspects of cable splicing, including cable design

and cable splicing procedures and techniques.

1.1 Electrical Cable

OBJECTIVE:

Identify the major parts of a primary cable.

In simple terms, a cable is a conductor that is enclosed in a layer of insulation. A conductor is a

material that provides an easy path for the flow of electrical current. For example, the conductors

shown in Figure 1.1-1 are stranded aluminum wire. Conductors are commonly made of

aluminum or copper. The insulation around a conductor is a material that strongly resists the flow

of electrical current.

Figure 1.1-1. Stranded Aluminum Conductor

A Conductor-Stranded Aluminum B Filled Strand-Semiconducting Material

C Strand Screen-Extruded Semiconducting EPR D Insulation-Okoguard

E Insulation Screen-Extruded Semiconducting EPR F Concentric Conductor-Bare Copper Wires

G Encapsulating Jacket-Okolene with Extruded ID Stripes


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1.1 Electrical Cable (continued)

Insulation thickness is an important part of cable design. Normally, there is a relationship

between the amount of voltage a cable can handle and the amount of insulation necessary to

safely contain that voltage. With secondary cable (Figure 1.1-2), this relationship can generally

be maintained by applying a standard insulation thickness that is sufficient to handle the entire

range of secondary voltages.

Figure 1.1-2. Secondary Cable Insulation


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The relationship between voltage and insulation thickness cannot be as easily maintained at

higher distribution voltages. For primary distribution voltages, the amount of insulation required

would make the cables too thick and bulky. To overcome this problem, different layers are added

to primary cables to improve the efficiency of the cables insulation. The primary cable layers

illustrated in Figure 1.1-3 are typical of the additional layers that can be found on primary cable.

Figure 1.1-3 shows a conductor shield, primary insulation, an insulation shield, a metallic shield,

and a jacket. Primary cable generally has some or all of these layers.

Figure 1.1-3. Primary Cable Layers


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The conductor represented in Figure 1.1-3 is a stranded copper wire. A conductor may be either

stranded or solid. Stranded conductors are commonly used because of their flexibility. Solid

conductors are rarely used in URD applications.

Directly over the conductor is the conductor shield. The conductor shield is a layer of

semiconductive material that encloses the conductor and helps to give it a uniformly round shape.

Semiconductive material is material with properties that fall somewhere between those of a true

conductor and those of an insulator. Semiconductive materials are commonly used in the form of

conductive tapes, paints, and rubber or graphite compounds.

The primary insulation surrounds the conductor shield. The high insulating properties of the

primary insulation help to keep the energized conductor isolated from ground and from other

conductors. The most common types of primary insulation for URD applications are cross-linked

polyethylene (XLP) and ethyl-propylene rubber (EPR).

The insulation shield surrounds the primary insulation. The insulation shield is made of a

semiconductive material similar to that used for the conductor shield.

The metallic shield layer is a layer of conducting material that surrounds the insulation shield.

The metallic shield is usually made of copper or aluminum, in the form of either concentric wires

or metallic taped ribbon.

The cable jacket, or sheath, is the outermost layer in Figure 1.1-3. Its main purpose is to protect

the cable from the environment. The cable jacket is usually made of a non-conductive material

such as plastic or rubber.


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Primary cable is manufactured in a number of designs, using some or all of the layers shown in

Figure 1.1-3. The designs used vary from company to company, depending on system

requirements and company policies. For example, some companies use primary cable that does

not have a jacket. An example of this type of cable is shown in Figure 1.1-4.

Figure 1.1-4. Primary Cable Without a Jacket

Unshielded Primary

Conductor Cable


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Questions

1.1-1. True or False. A cable may be defined as a conductor enclosed in insulation.

1.1-2. Conductors are generally made of either (a) _______________ or (b)

_______________.

1.1-3. Stranded conductors are used more frequently than _______________ conductors

because they are more flexible.

1.1-4. True or False. The type of insulation known as EPR is also known as cross- linkedpolyethylene.

1.1-5. Identify the indicated layers of the cable shown below.

a. ______________________________b. ______________________________

c. ______________________________d. ______________________________e. ______________________________

f. ______________________________


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CABLE SPLICIG - Part 1 (continued)

1.2 Voltage Stress and Stress Relief

URD cables are designed with different layers of insulation as a means of offsetting the effects of

normal operation. Two of these effects are voltage stress and the buildup of static charges.

OBJECTIVES:

Explain what voltage stress is.

Explain how a layered cable design helps to counteract the effects

of voltage stress.

Explain how a layered cable design helps to provide for the relief

of static charges.

1.2.1 Voltage Stress

Voltage stress is stress on a cable's insulation caused by the application of voltage to the

conductor. If the voltage on the conductor is higher than the insulating property of the insulation,

the insulation may become overstressed, which can result in insulation failure. If insulation fails,

the cable cannot isolate the voltage applied to it, and repair or replacement may be required.


1910.269p (a) (2) (as of ovember, 2006):

Training.

(i) Employees shall be trained in and familiar with the safety-related work practices, safety

procedures, and other safety requirements in this section that pertain to their respective job

assignments. Employees shall also be trained in and familiar with any other safety practices,

including applicable emergency procedures (such as pole top and manhole rescue), that are

not specifically addressed by this section but that are related to their work and are necessary

for their safety. (ii) Qualified employees shall also be trained and competent in: (A) The

skills and techniques necessary to distinguish exposed live parts from other parts of electric

equipment, (B) The skills and techniques necessary to determine the nominal voltage ofexposed live parts, (C) The minimum approach distances specified in this section

corresponding to the voltages to which the qualified employee will be exposed, and (D) The

proper use of special precautionary techniques, personal protective equipment, insulating and

shielding materials, and insulated tools for working on or near exposed energized parts of

electric equipment. ote: For the purposes of this section, a person must have this training in

order to be considered a qualified person.


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1.2 Voltage Stress and Stress Relief (continued)

Figure 1.2-1 illustrates a single cable with a stranded conductor. When voltage is applied, the

cables insulation is stressed, as indicated by the lines radiating outward from the conductor. The

stress lines radiate almost straight down at the bottom of the cable, and they bend downward

towards ground near the top of the cable. Because the conductor is stranded, its shape is not

uniform, and there are high and low points from which the lines radiate. Normally, voltage stress

concentrates in areas such as the high points, where insulation is not as thick.

Figure 1.2-1. Voltage Stress Lines

Notes: _______________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________


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A layered cable design helps reduce the effects of voltage stress on a cable's insulation. For

example, as illustrated in Figure 1.2-2, a conductor shield layer provides a uniform thickness of

insulation around the conductor. This layer of semiconductive material helps reduce areas of

stress concentration, but it does not eliminate voltage stress. As indicated in Figure 1.2-2, the

stress lines are now concentrated toward the bottom of the conductor, in the area of insulation

that is closest to ground.

Figure 1.2-2. Conductor Shield Layer and Stress Lines


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To deal with the problem of stress concentration in the area of insulation near the bottom of the

conductor, a semiconductive insulation shield layer (Figure 1.2-3) is added over the primary

insulation to provide a uniform ground around the primary insulation. This uniform ground

evenly distributes the lines of stress through the primary insulation.

Figure 1.2-3. Insulation Shield Layer and Evenly Distributed Stress Lines

1.2.2 Stress Relief

When a conductor is energized, a small amount of leakage current flows through the cable

insulation. This leakage current can cause the buildup of a static charge on the semiconductive

insulation shield layer.


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To provide for the relief of static chargebuildup, a metallic shield layer, sometimes in the form

of concentric wire shielding (Figure 1.2-4), is added. The metallic shield layer is grounded, and is

in direct contact with the semiconductive insulation shield layer beneath it. Leakage current is

dissipated through the metallic shield to ground before any serious static charge buildup can

occur.

Figure 1.2-4. Concentric Wire Shielding

1.2.3 Other Cable Design Considerations

In addition to reducing voltage stress concentration and relieving static charge buildup, cables are

designed to deal with other factors. For example, the semiconductive and metallic shield layers

help keep the electrical field of the conductor within the limits of the cable.

If grounded properly, the cable's design helps to reduce the shock hazard to personnel who may

come into contact with the cable. In addition, the design keeps the conductor from getting any

electrostatically induced voltage from other electrical cables or from other energized sources inthe area.


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Questions

1.2-1. Circle the correct answer.

Voltage stress

a. Is stress on a cable's insulation caused by the application of voltage to theconductor

b. If strong enough, can result in insulation failurec. Is a consideration in cable designd. All of the above

1.2-2. A cable's semiconductive insulation shield layer helps to reduce areas of

_________________________________________

1.2-3 When a conductor is energized, a small amount of leakage current is produced,

causing a ________________ charge buildup on the cable's semiconductive

insulation shield layer.

1.2-4. True or False. The problem of static charge buildup can be dealt with by adding a

metallic shield layer directly over the semiconductive insulation shield layer and

then grounding the metallic shield layer.


A primary cable's design works to

a. Keep the conductor's electrical field within the limits of the cableb. Help reduce the shock hazard to personnel who may contact the cable

c. Keep the cable from being affected by electrostatically induced voltages fromother cables or energized sources in the area

d. All of the above

Notes: _______________________________________________________________

_____________________________________________________________________


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CABLE SPLICIG - Part 1 (continued)

1.3 Cable Preparation

Cable splicing is the process of joining two cable ends together, while maintaining the cable's

original design characteristics. Cable splicing is done routinely when damaged cable is repaired

or existing cable is extended. Cable splicing can be accomplished in a number of different ways.

Regardless of the specific method that is used, however, an important first step is preparing the

cable for splicing.

OBJECTIVES:

Describe one method of preparing primary cable for a tape splice. Identify equipment that can be used to prepare primary cable for a tape splice.

1.3.1 General Considerations

Primary cable is prepared for splicing by removing the individual cable layers, one at a time. As

each layer is removed, care must be taken to avoid nicking or damaging the layers below it.

Damage to one of the layers can weaken it, thus defeating the purpose of the splice. Care mustalso be taken to keep the splice area clean. Dirt and other contaminants can create a conductive

path, which can make the splice weak or ineffective.

The way that a cable is prepared for a splice depends on several factors, including the cable

design, the type of insulation, and the type of splice to be made. To ensure that the cable is

prepared correctly for a particular splice, a specific set of directions for that splice should be

followed.

The example that follows is based on a typical set of directions for preparing a single-conductor

primary cable for a tape splice. It is assumed that the cable has been properly de-energized,

grounded, and tested for dead.


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1.3 Cable Preparation (continued)

1.3.2 Preparation for a Tape Splice

The first step in preparing for the splice is "training," or moving, the cable into its final position

at the job site. One reason that training is done is to provide additional space in the work area. In

a vault, for example, additional space may be obtained by training cables along a wall rather than

allowing them to hang free. Training is also done to increase cable slack, and thus to reduce

mechanical strain. Most cable splices are not designed to support a mechanical strain. Finally,

training helps to keep the cable from being moved after it is cut. If the cable is moved after it is

cut, the conductor strands can become uneven, which can result in a weak point in the splice.

The next major step in preparing for a splice is cutting the cable ends. Before the cable ends are

cut, the splice area is cleaned with cable cleaner and a clean cloth to remove contaminants such

as dirt, wax, or pulling compounds. The cables to be spliced are then overlapped (Figure 1.3-1),

and a mark is made at the center line of the splice area on each cable. Overlapping the ends isnecessary to provide enough of the concentric wires to be spliced later.

Figure 1.3-1. Cable Ends Overlapped


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The first layer to be cut in this example is the jacket. According to the directions for this splice, a

measurement is taken from the center line (Figure 1.3-2) to indicate where the jacket will be cut.

The jacket is then lightly scored to indicate this point. As this is done, care should be taken not to

damage the concentric wires under the cable jacket.

Figure 1.3-2. Workman Measuring from Center Line


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Next, a single strand of the concentric wire is stripped back to the mark on the jacket. As the wire

is stripped back, it cuts through the jacket. The jacket is then peeled back carefully and removed.

The loose concentric wires are folded back to the cable jacket and twisted together out of the way

(Figure 1.3-3).

Figure 1.3-3. Concentric Wires Twisted Out of the Way

Concentric Wires


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Since the jacket has been removed, the original mark that was made on the jacket no longer

exists. Therefore, the next step is to take another measurement for the cable's center line so that

the final cable cut can be made. The cable is then cut on the center line with a cable cutter

(Figure 1.3-4) or a hacksaw.

Figure 1.3-4. Cable Cutter


1910.138 (as of January, 2007)

Hand protection.

(a) General requirements. Employers shall select and require employees to use appropriate hand protection when

employees' hands are exposed to hazards such as those from skin absorption of harmful substances; severe cuts or

lacerations; severe abrasions; punctures; chemical burns; thermal burns; and harmful temperature extremes.

(b) Selection. Employers shall base the selection of the appropriate hand protection on an evaluation of the

performance characteristics of the hand protection relative to the task(s) to be performed, conditions present,

duration of use, and the hazards and potential hazards identified.


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The remaining preparation steps involve the removal of each of the remaining cable layers.

Precise measurements must be made, and the splice directions must be followed carefully during

these steps. Each cable layer is cut at a specific distance from the cable end. These distances are

given in the splice directions. The workman must be exact in making the measurements to avoid

having to start the splice over or replace the entire length of cable.

The first layer to be removed is the insulation shield. Specially designed tools or a knife may be

used, depending on company procedures. If a knife is used, the insulation shield is scored lightly

at the mark, to a depth of about half of its thickness. The knife is then used to make a similar

score to the end of the cable, creating a weak point in the insulation shield layer. The layer is

removed by pulling and breaking it at the weak point (Figure 1.3-5). During this step, care must

be taken not to score or nick the primary insulation beneath the insulation shield.

Figure 1.3-5. Removing the Insulation Shield Layer

Cables Insulation

Shield Layer


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The next layers to be removed are the primary insulation and conductor shield layers. Several

methods and tools may be used for this step. For example, after the required distance has been

measured, a knife may be used to cut halfway through the primary insulation and then down to

the end. The cut creates a weak point in the insulation. The insulation can then be removed by

pulling and breaking it at the weak point.

With XLP and EPR insulation, a nylon string (Figure 1.3-6) may be used. The string is used to

make a circular cut through both the insulation and the conductor shield layers without damaging

the conductor. A knife is then used to cut down to the end of the cable, and the insulation is

removed.

Figure 1.3-6. ylon String Used to Help Remove Primary Insulation

and Conductor Shield Layers

As an alternative to using a knife or a nylon string, specially designed tools may be used to

remove the primary insulation and conductor shield layers. Regardless of the method used,

however, the conductor shield layer and the insulation layer should both be removed without

damaging the conductor.

Nylon String


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The final step in preparing a cable for splicing is tapering, or penciling, the cable ends. Tapering

is the process of forming a pencil-like slope at the end of a cable's insulation. It accomplishes

two things: (1) it provides for a smooth transition between the primary insulation and the

insulation that will be applied to the splice area, and (2) it helps the insulation applied to the

splice area withstand voltage stress, by ensuring that there are no voids in the insulation.

Tapering can be done with specially designed tools or with a knife. If a knife is used, a protective

layer of tape should be placed over the conductor (Figure 1.3-7) to protect it from being nicked.

The knife is used to cut the primary insulation to the desired slope.

Figure 1.3-7. Tapering Primary Insulation

After both cable ends have been prepared by the steps described in this section, the conductor is

ready to be spliced.


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Questions

1.3-1. Cable splicing is the process of joining two cable ends together while maintaining

the cable's original __________________.

1.3-2. True or False. Preparing a cable to be spliced involves removing most of the

individual layers, one at a time.

1.3-3. When a cable is being prepared for splicing, care must be taken not to

__________________ the layer below the one being removed.

1.3-4. A clean splice area is important for cable splicing because dirt and othercontaminants can create a __________________, which can make the splice weak

or ineffective.

1.3-5. To ensure that a particular splice is prepared correctly, a specific set of

__________________ for that splice should be followed.


Tapering, or penciling, primary insulation

a. Provides for a smooth transition between the primary insulation and theinsulation that will be applied to the splice area

b. Guards against conductor damagec. Helps the insulation applied to the splice area to withstand voltage stress, by

ensuring that there are no voids in the insulation

d. All of the abovee. Only a and c

Notes: _______________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________


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GLOSSARY

This glossary contains terms pertinent to the study of cable splicing. The meanings of the terms

are given in that context.


Glossary

Cold shrink splice - A type of secondary splice in which a rubber tube is shrunk

over a cable connector by pulling a tab extending from the

tube.

Compression connector - A metal connector that is secured by compressing, or crimping.

Concentric wires - A layer of metallic wires used as a system neutral (primary or

secondary cable) or to bleed off excess static charges (primary

cable only).

Conductor - A material that allows the flow of electricity; a metal wire, in

the center of an electrical cable, through which current flows.

Conductor shield - A layer of semiconductive material directly over a cable

conductor; helps to give a stranded conductor a more

uniformly round shape.

Copper shielding tape - Tape applied over the insulation shield layer of some primary

tape splices to provide added stress relief properties.

Dies - Compression tool sizing inserts; allow a hydraulic ormechanical press to be used with different-sized connectors.

Grounding eye - A connection point for a single concentric wire on a premolded

slip-on primary splice; used to ensure contact between the

concentric wire and insulation shield layers of the splice.

Heat shrink splice - A splice that uses tubes that shrink and adhere to a cable when

they are heated.

Hydraulic press - A compression device that uses hydraulic pressure to crimp a

connector onto a conductor.

Insulation layer - The layer of insulating material directly over a primary cables

conductor shield layer.


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Glossary (continued)

Insulation shield - A layer of semiconductive shielding placed over primary

cable insulation.

Insulator - A material that is a poor conductor of electricity.

Jacket - The outermost layer of some primary cables; protects the

layers beneath it from the environment.

Leakage current - A small amount of current flow through a cable's primary

insulation layer; produced when a primary cable is

energized.

Mechanical press - A compression device that uses the mechanical advantage of

its handles to crimp a connector onto a conductor.

Metallic shield - Conducting material in direct contact with the insulationshield; designed to alleviate excessive static charge buildup

and/or act as a system neutral.

"O" rings - The rubber "O"-shaped rings that fit under an insulating

tube to help form a water-tight seal in a rolling ring seal

secondary splice.

Penciling - The process of tapering the ends of cable insulation during

the splice preparation process.

Rolling ring seal splice - A secondary splice that uses rubber "0" rings and aninsulating tube to form a water-tight seal.

Semiconductor - A material with properties that fall somewhere between

those of a true conductor and those of a true insulator.

Slip-on splice - A primary cable splice that uses a premolded insulating tube

that slips over a compression connector, restoring the

cable's design characteristics.

Splice kit - A ready-made kit containing all or most of the materials

necessary to install a splice.


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Glossary (continued)

Splicing - The process of joining two cable ends together while

maintaining the cable's original design characteristics.

Split bolt - A mechanical connector consisting of a slotted, threadednut and bolt arrangement into which two conductor ends

are inserted.

Stress control putty - A substance applied with a heat shrink splice to help

provide voltage stress handling properties.

Tape splice - A type of primary cable splice that uses layers of rubber,

plastic, semiconductive, and conductive tapes to replace

original cable layers.

Training - Adjusting or moving a cable to make a work area moreaccessible; done to reduce mechanical strain on a splice

area and to reduce conductor movement.

Voltage stress - Stress on a cable's insulation caused by the application of

voltage.

Notes: _______________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

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