30 C.F.R. § 77.811 Movement of portable substations and transformers.
Title 30 - Mineral Resources
Portable substations and transformers shall be deenergized before they are moved from one location to another.
Title 30: Mineral Resources
PART 77—MANDATORY SAFETY STANDARDS, SURFACE COAL MINES AND SURFACE WORK AREAS OF UNDERGROUND COAL MINES
Subpart I—Surface High-Voltage Distribution
§ 77.811 Movement of portable substations and transformers.

