Regulations last checked for updates: Oct 19, 2024

Title 30 - Mineral Resources last revised: Oct 03, 2024
All TitlesTitle 30Chapter IPart 77Subpart J - and Medium-Voltage Alternating Current Circuits
View all text of Subpart J [§ 77.900 - § 77.906]
§ 77.902-2 - Approved ground check systems not employing pilot check wires.

Ground check systems not employing pilot check wires shall be approved by the Secretary only after it has been determined that the system includes a fail safe design causing the circuit breaker to open when ground continuity is broken.

authority: 30 U.S.C. 811.
source: 36 FR 9364, May 22, 1971, unless otherwise noted.
cite as: 30 CFR 77.902-2
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