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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 30 - Mineral Resources |
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Chapter I - Mine Safety and Health Administration, Department of Labor |
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SubChapter O - Coal Mine Safety and Health |
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Part 77 - Mandatory Safety Standards, Surface Coal Mines and Surface Work Areas of Underground Coal Mines |
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Subpart J - Low- and Medium-Voltage Alternating Current Circuits |
§ 77.900-2 - Testing, examination, and maintenance of circuit breakers; record.
Latest version.
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§ 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.