30 CFR § 75.706 Mandatory Safety Standards—Underground Coal Mines

§ 75.706 Deenergized underground power circuits; idle days—idle shifts.

Current through Jul 27, 2026 · Read all of Part 75

⚠ 3 pending changes to Part 75

[Statutory Provisions]

When not in use, power circuits underground shall be deenergized on idle days and idle shifts, except that rectifiers and transformers may remain energized.

← § 75.705-11 Use of grounded messenger wires; ungrounded systems.§ 75.800 High-voltage circuits; circuit breakers. →