FACILITY, EQUIPMENT, AND PERSONNEL PROTECTION

Design considerations for grounding systems and proper bonding practices.

Paul Stieve Northeast Regional Manager

ERICO Grounding and Bonding 1

ENGINEERED ELECTRICAL & FASTENING SOLUTIONSTECHNICAL SOLUTIONS

Presentation Outline

• ERICO• Why we ground ? Equipotential

plane….• CADWELD

Hands On• Lightning Protection• SRG• CRITEC

1903

Electric RailwayImprovement COmpany

Product Expansion

• 1936 – First public demonstration of CADWELD Process

1939Product installation

in the field

ERICO® MARKET FOCUS

5ERICO Grounding and Bonding

Purpose of Grounding

• The primary goal of the grounding system throughout any facility is SAFETY.

• Grounding is implemented to ensure rapid clearing of faults and to prevent hazardous voltage, which in turn reduce the risks of fires and personnel injuries.

• Secondary are effective lightning protection, diminishing electromagnetic coupling (EMC), and the protection against electromagnetic pulses (EMP).

EQUIPOTENTIAL PLANE (NEC 547.2)

Personnel Safety

An equipotential plane is an area where wire mesh or other conductive elements are embedded in or placed under concrete, bonded to all metal structures and fixed non-electrical equipment that may become energized, and connected to the electrical grounding system.

An equipotential plane minimizes ground potential rise8ERICO Grounding and Bonding

Grounding Electrode System

Basic Electrical Theory Resistivity

Resistivity is the intrinsic property of a material to impede the flow of electrical current. It is the resistance factored by the length and cross sectional area. It is also referred to as volume resistivity.

Equipotential Plane ?

• Equipotential Plane:A mass or bonded masses of conducting material that offers a low impedance to current flow.

Equipotential Bonding of Pools

Equipotential Grid Options and Equipment Bonding Requirements

Wind Power Opportunities

Exothermic Connections

Exothermic Connections

• Provide a Molecular Bond Between Conductors– Current Carrying Capacity

Equal to that of the Conductor– Permanent – Never Loosen or Corrode – Never get a Higher in

Resistance – Can be Visually Checked for

Quality

Comparison of Mechanical and Exothermic Connections

Molecular Bonds Guarantee Conductivity Across the Entire SectionContact and Spreading Resistance Portion of Connection is Zero

Molecular bond

Mechanicalconnection

Traditional Exothermic System

• Graphite Mold• Welding Material• Starting Material• Disk• Frame / Clamp

CADWELD Mold Part Numbering

• 40,000 Mold Designs in Engineering Records

• 16,000 Mold Designs in Business System– 8,000 Active– 8,000 Inactive / No Use

• 193 Connection Families

CADWELD PLUS

Next Generation of Exothermic Connections

CADWELD / CADWELD PLUS

• Integrated Disposable Weld Metal Package– Weld Metal, Disk and Ignition Source

CADWELD® PLUS

Simplifies Method of Completing CADWELD®

Connections

ERICO

• Grounding Modeling • Lightning Protection Design

– Review Of drawing – Technical Assistance for LP– LP Details

• Review of Specifications • Grounding Details • White Papers – Theft Detterent ,

Cooper ground Rods , Ontario Hydro Report

THANK YOU !

Paul StieveNortheast Regional Sales Manager

ERICO,Inc.