C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER O—COAL MINE SAFETY AND HEALTH › PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES › Subpart F—Electrical Equipment—General

30 C.F.R. § 75.517-1

Power wires and cables; insulation and protection

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Power wires and cables installed on or after March 30, 1970, shall have insulation with a dielectric strength at least equal to the voltage of the circuit.