30 CFR § 77.507 Mandatory Safety Standards, Surface Coal Mines and Surface Work Areas of Underground Coal Mines

§ 77.507 Electric equipment; switches.

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

All electric equipment shall be provided with switches or other controls that are safely designed, constructed, and installed.

← § 77.506-1 Electric equipment and circuits; overload and short circuit protection; minimum requirements.§ 77.508 Lightning arresters, ungrounded and exposed power conductors and telephone wires. →