SUBPART J—Underground Low- and Medium-Voltage Alternating Current Circuits (§75.900 to §75.907)
- 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.