Prudently treat all lines and equipment as live – and as vulnerable to fault currents – unless s/he has verified that the equipment is correctly de-energized, tested for zero voltage, and grounded.
Select protective ground equipment of appropriately high conductive capacity and low impedance, and verify that grounds are spaced at required minimum intervals.
Safely connect and remove grounds (including specific scenarios for parallel and cable grounding).
Establishing Safe Conditions for De-Energized and Grounded Work
Safe Grounding Practices
29 CFR 1910.269, Subpart R: Special Industries, Section (n), (m) and (q)
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