30 C.F.R. § 77.701 Grounding metallic frames, casings, and other enclosures of electric equipment.
Title 30 - Mineral Resources
Metallic frames, casings, and other enclosures of electric equipment that can become “alive” through failure of insulation or by contact with energized parts shall be grounded by methods approved by an authorized representative of the Secretary.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart H—Grounding
§ 77.701 Grounding metallic frames, casings, and other enclosures of electric equipment.
