Title 30
SECTION 77.900-2
77.900-2 Testing, examination, and maintenance of circuit breakers; record.
§ 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.