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

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§ 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.

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

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

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