MSHA - Code of Federal Regulations - 30 CFR 75.518
Skip to content
MSHA - Title 30 CFR
30 CFR § 75.518
Electric equipment and circuits; overload and short circuit protection.


Automatic circuit-breaking devices or fuses of the correct type and capacity shall be installed so as to protect all electric equipment and circuits against short circuit and overloads. Three-phase motors on all electric equipment shall be provided with overload protection that will deenergize all three phases in the event that any phase is overloaded.