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Occupational Safety and Health Administration OSHA

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Accident Investigation Summary
Summary Nr: 906255 Event: 08/07/1996Electric Shock - Ground Fault In Furnace
An electrician was working in the crawl space beneath a single-family residence. As he was moving past one of the metal air-handling ducts, he apparently contacted with it with his right shoulder. The metal frame of the furnace and the attached metal ductwork were energized because the furnace was not properly grounded. Additionally, the polarity of the furnace circuit was possibly reversed. The electrician was electrocuted. (He was in contact with the energized ductwork for about 2 hours, until the homeowner noticed that he was not moving.)
Keywords: furnace, duct, electrical, e gi vii, electrocuted, ground fault, equipment grounding, crawl space
Inspection Degree Nature Occupation
1 116121351 Fatality Electric Shock Electricians

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