30 CFR 77.800-1 - Testing, examination, and maintenance of circuit breakers; procedures.

Regulations last checked for updates: Oct 19, 2024

Title 30 - Mineral Resources last revised: Oct 03, 2024

View all text of Subpart I [§ 77.800 - § 77.811]

§ 77.800-1 - Testing, examination, and maintenance of circuit breakers; procedures.

(a) Circuit breakers and their auxiliary devices protecting high-voltage circuits to portable or mobile equipment shall be tested and examined at least once each month by a person qualified as provided in § 77.103.

(b) Tests shall include:

(1) Breaking continuity of the ground check conductor where ground check monitoring is used; and,

(2) Actuating any of the auxiliary protective relays.

(c) Examination shall include visual observation of all components of the circuit breaker and its auxiliary devices, and such repairs or adjustments as are indicated by such tests and examinations shall be carried out immediately.

authority: 30 U.S.C. 811.

source: 36 FR 9364, May 22, 1971, unless otherwise noted.

cite as: 30 CFR 77.800-1