30 CFR § 75.512
Electric equipment; examination, testing and maintenance.
All electric equipment shall be frequently examined, tested, and properly
maintained by a qualified person to assure safe operating conditions. When a
potentially dangerous condition is found on electric equipment, such
equipment shall be removed from service until such condition is corrected. A
record of such examinations shall be kept and made available to an authorized
representative of the Secretary and to the miners in such mine.
[35 FR 17890, Nov. 20, 1970, as amended at 47 FR 14706, Apr. 6, 1982; 60 FR 33719, June 29, 1995]