NECA 331 : 2009

Foreword
1. Scope
   1.1 Equipment and Applications Included
   1.2 Equipment and Applications Excluded
   1.3 Regulatory and Other Requirements
2. Grounding Systems Overview
   2.1 Grounding Conductors
   2.2 Equipment Grounding Conductor (EGC)
   2.3 Grounding Electrode Conductor (GEC)
   2.4 Grounding Electrode Conductor Protection
   2.5 Repair of Splicing and Grounding Conductors
3. Service Entrance and Building Grounding
   3.1 General Requirements
   3.2 Metal Underground Water Piping
   3.3 Metal Building Frame
   3.4 Concrete-Encased Electrodes (Ufer Grounds)
   3.5 Ground Ring
   3.6 Made Electrodes
   3.7 Ground Enhancement Materials and Chemical Rods
4. Building Exterior Grounding
   4.1 Perimeter Grounding
   4.2 Fence Grounding
   4.3 Grounding Other Exterior Items
   4.4 Single Grounding Electrode System
5. Building Interior Bonding and Grounding
   5.1 Bonding
   5.2 Equipment Bonding
   5.3 Grounding Bus and Grounding Bars
6. Bonding and Grounding of Electronic Systems
   6.1 Performance Bonding and Grounding
   6.2 Signal Reference Ground
   6.3 Ground Current Interference with Cathode Ray
       Tube (CRT) Based Equipment
   6.4 Networked Workstation Equipment
7. Work Review
   7.1 Final Review Before Energizing
   7.2 Periodic Checks and Maintenance
Annex A: Reference Standards

Specifies installation procedures for building and service entrance grounding as well as building interior bonding and grounding.