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904 Oil and Gas Well Inspection
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Electrical Systems

Ground Fault Circuit Interrupters

Ground Fault Circuit Interrupters, or GFCI’s should be used for all portable or temporary power tools used on the rig. If GFCI breakers are not installed in breaker panels, portable units should be provided that can be placed in line to protect employees from ground shocks when using portable power tools.

Proper grounding of a rig
Proper grounding of the rig.

Grounding

The rig and its components must be grounded and bonded to ensure a clear path to ground in the event of a short circuit. The ground rods must be installed before starting power generation equipment and not detached until generators are shut down. All buildings and electrical equipment must be bonded to the ground system.

Knowledge Check Choose the best answer for the question.

2-8. If GFCI breakers are not installed in breaker panels, what should the inspector verify?