---
kind: "section"
citation: "30 C.F.R. § 77.900-2"
title: "30"
number: "77.900-2"
heading: "Testing, examination, and maintenance of circuit breakers; record."
url: "https://uscodex.org/cfr/30/77.900-2"
---

# §77.900-2. Testing, examination, and maintenance of circuit breakers; record.


The operator shall maintain a written record of each test, examination, repair or adjustment of all circuit breakers protecting low- and medium-voltage circuits serving three-phase alternating current equipment and such record shall be kept in a book approved by the Secretary.


## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

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