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Regulations last checked for updates: Nov 22, 2024
Title 30 - Mineral Resources last revised: Nov 19, 2024
All Titles
Title 30
Chapter I
Part 77
Subpart J - and Medium-Voltage Alternating Current Circuits
§ 77.900 - Low- and medium-voltage circuits serving portable or mobile three-phase alternating current equipment; circuit breakers.
§ 77.900-1 - Testing, examination, and maintenance of circuit breakers; procedures.
§ 77.900-2 - Testing, examination, and maintenance of circuit breakers; record.
§ 77.901 - Protection of low- and medium-voltage three-phase circuits.
§ 77.901-1 - Grounding resistor; continuous current rating.
§ 77.902 - Low- and medium-voltage ground check monitor circuits.
§ 77.902-1 - Fail safe ground check circuits; maximum voltage.
§ 77.902-2 - Approved ground check systems not employing pilot check wires.
§ 77.902-3 - Attachment of ground conductors and ground check wires to equipment frames; use of separate connections.
§ 77.903 - Disconnecting devices.
§ 77.904 - Identification of circuit breakers.
§ 77.905 - Connection of single-phase loads.
§ 77.906 - Trailing cables supplying power to low-voltage mobile equipment; ground wires and ground check wires.
authority:
30 U.S.C. 811.
source:
36 FR 9364, May 22, 1971, unless otherwise noted.
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