Mine Safety and Health Administration (MSHA) - Code of Federal Regulations - 30 CFR 56.12004
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MSHA - Title 30 CFR
30 CFR § 56.12004

Electrical conductors.


Electrical conductors shall be of a sufficient size and current-carrying capacity to ensure that a rise in temperature resulting from normal operations will not damage the insulating materials. Electrical conductors exposed to mechanical damage shall be protected.




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