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Regulations last checked for updates: May 23, 2025
Title 30 - Mineral Resources last revised: Apr 14, 2025
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Title 30
Chapter I
Part 75
Subpart J - 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 Appendix A - Appendix A to Subpart J of Part 75
authority:
30 U.S.C. 811
,
813
,
957
source:
35 FR 17890, Nov. 20, 1970, unless otherwise noted.
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