Code of Federal Regulations
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30 CFR Mineral Resources
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I Mine Safety and Health ...
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O Coal Mine Safety and He...
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75 Mandatory Safety Stand...
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Subpart J —
Underground Low- and Medium-Voltage Alternating Current Circuits
§75.900 —
Low- and medium-voltage circuits serving three-phase alternating current equipment; circuit breakers
§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
§75.901 —
Protection of low- and medium-voltage three-phase circuits used underground
§75.902 —
Low- and medium-voltage ground check monitor circuits
§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
§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 of Part 75