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2.3.4 Performance Evaluation Program.
Purpose. This program provides the checklist and procedures for the evaluation of compliance to
overall Grounding, Bonding, and Shielding (GBS) practices prescribed in Volumes I and II.
Reference Documents.
(1) MIL-STD-188-124A, Grounding, Bonding, and Shielding for Common Long Haul/Tactical
Communication Systems.
National Electrical Code.
Lightning Protection Code.
Procedures.  The evaluation for Grounding, Bonding, and Shielding (GBS) is accomplished mainly
through visual inspection by an evaluator qualified in GBS. The checklist for accomplishing the inspection is
shown in Section d below. The checklist requires a "yes" or "no" answer. Shown in the checklist is the proper
answer (indicated by X) for compliance with GBS requirements. The test procedure for measuring resistance to
ground of the earth electrode subsystem is provided in Volume I, Chapter 2. A clamp-on ammeter with a full
scale range of six amps on the lowest scale is required to measure ac current. Also required to measure bond
resistance is a milliohm meter. Procedures for using these equipments come with the instruction book. An
ohmmeter with the capability to measure one megohm resistance will also be required.
The Performance Evaluation Program GBS checklist follows:


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