30 C.F.R. § 77.806 Connection of single-phase loads.
Title 30 - Mineral Resources
Single-phase loads, such as transformer primaries, shall be connected phase to phase in resistance grounded systems.
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
§ 77.806 Connection of single-phase loads.
