30 C.F.R. § 75.517-1 Power wires and cables; insulation and protection.
Title 30 - Mineral Resources
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.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart F—Electrical Equipment—General
§ 75.517-1 Power wires and cables; insulation and protection.
