![]() |
Code of Federal Regulations (Last Updated: July 5, 2024) |
![]() |
Title 30 - Mineral Resources |
![]() |
Chapter I - Mine Safety and Health Administration, Department of Labor |
![]() |
SubChapter O - Coal Mine Safety and Health |
![]() |
Part 75 - Mandatory Safety Standards - Underground Coal Mines |
![]() |
Subpart F - Electrical Equipment - General |
§ 75.519-1 - Main power circuits; disconnecting switches; locations.
Latest version.
-
§ 75.519-1 Main power circuits; disconnecting switches; locations.
Section 75.519 requires (a) that a disconnecting switch be installed on the surface at a point within 500 feet of the place where the main power circuit enters the underground area of a mine, and (b) that, in an instance on which a main power circuit enters the underground area through a shaft or borehole, a disconnecting switch be installed underground within 500 feet of the bottom of the shaft or borehole.