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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 14393482 - Electric Shock - Ground Fault In Welding Machine

Accident: 14393482 -- Report ID: 0625700 -- Event Date: 05/04/1987
InspectionOpen DateSICEstablishment Name
10164110805/05/19875084Pala-Interstate, Inc.
InspectionOpen DateSICEstablishment Name
10163410305/05/19872621Crown Zellerback Corporation
InspectionOpen DateSICEstablishment Name
10164110805/05/19875084Pala-Interstate, Inc.
A superintendent for a construction company asked a plant maintenance electrician to hook up a welding machine. The electrician cut the plug off of the machine and thinking the machine was a three-phase unit connected each of the conductors (black, white, and green) directly to one phase of a three-phase circuit in a panelboard. The welding machine was actually a 240-volt, single-phase unit, and the green conductor was an equipment grounding conductor and was connected to the case of the machine. When the electrician connected the equipment grounding conductor to the 277-volt bus, the metal case of the welding machine became energized. The superintendent was electrocuted when he touched the welding machine. Another nearby employee, who was trying to help the injured worker, touched the machine and received an electric shock.
Keywords: electrical, attachment plug, ground fault, equipment grounding, electric shock, untrained, e gi v, electrician, electrocuted, panelboard
Employee # Inspection Age Sex Degree Nature Occupation
1 101641108 Non Hospitalized injury Electric Shock Occupation not reported
2 101634103 Occupation Not Listed
3 101641108 Fatality Electric Shock Managers and administrators, n.e.c

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