30 C.F.R. § 75.704 Grounding frames of stationary high-voltage equipment receiving power from ungrounded delta systems.
Title 30 - Mineral Resources
[Statutory Provisions] The frames of all stationary high-voltage equipment receiving power from ungrounded delta systems shall be grounded by methods approved by an authorized representative of the Secretary.
Title 30: Mineral Resources
PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES
Subpart H—Grounding
§ 75.704 Grounding frames of stationary high-voltage equipment receiving power from ungrounded delta systems.
