Code of Federal Regulations (Last Updated: November 8, 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 J - Underground Low- and Medium-Voltage Alternating Current Circuits |
§ 75.900-1 - Circuit breakers; location. |
§ 75.900-2 - Approved circuit schemes. |
§ 75.900-3 - Testing, examination, and maintenance of circuit breakers; procedures. |
§ 75.900-4 - Testing, examination, and maintenance of circuit breakers; record. |
§ 75.900 - Low- and medium-voltage circuits serving three-phase alternating current equipment; circuit breakers. |
§ 75.901 - Protection of low- and medium-voltage three-phase circuits used underground. |
§ 75.902 - Low- and medium-voltage ground check monitor circuits. |
§ 75.903 - Disconnecting devices. |
§ 75.904 - Identification of circuit breakers. |
§ 75.905 - Connection of single-phase loads. |
§ 75.906 - Trailing cables for mobile equipment, ground wires, and ground check wires. |
§ 75.907 - Design of trailing cables for medium-voltage circuits. |
Appendix A to Subpart J |
Appendix A to Subpart J of Part 75 |
§ 75.902-1 - Maximum voltage ground check circuits. |
§ 75.902-2 - Approved ground check systems not employing pilot check wires. |
§ 75.902-4 - Attachment of ground conductors and ground check wires to equipment frames; use of separate connections. |