30 CFR § 77.810 Mandatory Safety Standards, Surface Coal Mines and Surface Work Areas of Underground Coal Mines

§ 77.810 High-voltage equipment; grounding.

Current through Jul 27, 2026 · Read all of Part 77

Frames, supporting structures, and enclosures of stationary, portable, or mobile high-voltage equipment shall be effectively grounded.

← § 77.809 Identification of circuit breakers and disconnecting switches.§ 77.811 Movement of portable substations and transformers. →