In the event of a breakdown or damage or injury to any portion of the electrical equipment in a mine, or overheating, or the appearance of sparks or arcs outside of 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.
52 P.S. § 70-1106