30 CFR § 77.808 Mandatory Safety Standards, Surface Coal Mines and Surface Work Areas of Underground Coal Mines

§ 77.808 Disconnecting devices.

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

Disconnecting devices shall be installed at the beginning of each branch line in high-voltage circuits and they shall be equipped or designed in such a manner that it can be determined by visual observation that the circuit is deenergized when such devices are open.

← § 77.807-3 Movement of equipment; minimum distance from high-voltage lines.§ 77.809 Identification of circuit breakers and disconnecting switches. →