30 CFR Subpart J - 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