30 C.F.R. § 75.822 Underground high-voltage longwall cables.
Title 30 - Mineral Resources
In addition to the high-voltage cable design specifications in §75.804 of this part, high-voltage cables for use on longwalls may be a type SHD cable with a center ground-check conductor no smaller than a No. 16 AWG stranded conductor. The cables must be MSHA accepted as flame-resistant under part 18 or approved under subpart K of part 7.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart I—Underground High-Voltage Distribution
High-Voltage Longwalls
§ 75.822 Underground high-voltage longwall cables.
