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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 30 - Mineral Resources |
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Chapter I - Mine Safety and Health Administration, Department of Labor |
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SubChapter O - Coal Mine Safety and Health |
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Part 75 - Mandatory Safety Standards - Underground Coal Mines |
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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. |