MSHA issues autotransformer safety alert

In February, the agency issued a safety warning and best practices for work around autotransformers as they pose a potential ground fault hazard. “It is hazardous when a ground fault within the autotransformer occurs and goes undetected by the ground fault protection circuit. Miners and electricians have reported being shocked when contacting shuttle cars,” MSHA noted in its alert. Shuttle…

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