Mine Safety and Health Administration (MSHA) - Code of Federal Regulations - 30 CFR 75.811
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MSHA - Title 30 CFR
30 CFR § 75.811

High-voltage underground equipment; grounding.

[STATUTORY PROVISIONS]

Frames, supporting structures and enclosures of stationary, portable, or mobile underground high-voltage equipment and all high-voltage equipment supplying power to such equipment receiving power from resistance grounded systems shall be effectively grounded to the high-voltage ground.




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