---
kind: "section"
citation: "30 C.F.R. § 75.900-4"
title: "30"
number: "75.900-4"
heading: "Testing, examination, and maintenance of circuit breakers; record."
url: "https://uscodex.org/cfr/30/75.900-4"
---

# §75.900-4. Testing, examination, and maintenance of circuit breakers; record.


The operator of any coal mine 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 used in the mine. Such record shall be kept in a book approved by the Secretary.


## Notes

### Amendments

[35 FR 17890, Nov. 20, 1970, as amended at 60 FR 33723, June 29, 1995]

### Authority

Authority: 30 U.S.C. 811, 813(h), 957.

### Source

Source: 35 FR 17890, Nov. 20, 1970, unless otherwise noted.

### Amendments

[35 FR 17890, Nov. 20, 1970, as amended at 60 FR 33723, June 29, 1995]