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http://www.msha.gov/district/dist_08/eleclosecl.htm

On June 24, 2002, an electrical near-miss incident occurred at a surface mine in District 8. A contractor, who did not have a MSHA Surface Electrical Qualification, was at the mine electrical substation working under the direct supervision of a qualified electrician. The contractor was checking the substation to determine what was needed to relocate high voltage power lines in the substation. While inside an electrical enclosure within the substation, the contractor connected a phase rotation meter to a 4160-volt AC phase circuit. The phase rotation meter was not rated for 4160-volts and short-circuited. The contractor was wearing low voltage gloves and a face shield. He received no injuries from the incident.

gorto

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