Section 306. Report of defective equipment.
In the event of a breakdown or damage or injury to any portion of the electrical equipment in a mine, overheating or the appearance of sparks or arcs outside enclosed casings or in the event of any portion of the equipment not a part of the electrical circuit becoming energized, the equipment shall be disconnected from its source of power, the occurrence shall be promptly reported to a mine official and the equipment shall not be used again until necessary repairs are made.