30 C.F.R. § 75.800 High-voltage circuits; circuit breakers.
Title 30 - Mineral Resources
[Statutory Provisions] High-voltage circuits entering the underground area of any coal mine shall be protected by suitable circuit breakers of adequate interrupting capacity which are properly tested and maintained as prescribed by the Secretary. Such breakers shall be equipped with devices to provide protection against under-voltage grounded phase, short circuit, and overcurrent.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart I—Underground High-Voltage Distribution
§ 75.800 High-voltage circuits; circuit breakers.
