30 C.F.R. § 75.902-4 Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
Title 30 - Mineral Resources
In grounding equipment frames of all stationary, portable or mobile equipment receiving power from resistance grounded systems separate connections shall be used when practicable.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart J—Underground Low- and Medium-Voltage Alternating Current Circuits
§ 75.902-4 Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
