OSHA Accident Investigation · Summary #14393482
ELECTRICAL,ATTACHMENT PLUG,GROUND FAULT,EQUIPMENT GROUNDING,ELECTRIC SHOCK,UNTRAINED,E GI V,ELECTRICIAN,ELECTROCUTED,PANELBOARD
Event description
ELECTRIC SHOCK - GROUND FAULT IN WELDING MACHINE
Investigation abstract
A superintendent for a construction company asked a plant maintenance electricia ther nearby employee, who was trying to help the injured worker, touched the mac hine and received an electric shock. n 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 p anelboard. The welding machine was actually a 240-volt, single-phase unit, and t he green conductor was an equipment grounding conductor and was connected to the case of the machine. When the electrician connected the equipment grounding con ductor to the 277-volt bus, the metal case of the welding machine became energiz ed. The superintendent was electrocuted when he touched the welding machine. Ano
Victims (3)
-
#1 Fatality Age 58 M
- Nature of injury
- 10
- Part of body
- 4
- Event type
- 13
- Source
- 15
- Occupation code
- 19
- Human factor
- 6
- Environmental factor
- 13
- Task assigned
- 1
-
#2 Non-hospitalized injury Age 26 M
- Nature of injury
- 10
- Part of body
- 2
- Event type
- 13
- Source
- 15
- Occupation code
- 999
- Human factor
- 6
- Environmental factor
- 13
- Task assigned
- 1
-
#981 Degree 0 Age 0
- Nature of injury
- 0
- Part of body
- 0
- Event type
- 0
- Source
- 0
- Occupation code
- 0
- Human factor
- 0
- Environmental factor
- 0
- Task assigned
- 0
Codes shown verbatim from OSHA's accident-investigation database. A human-readable decoder is coming in a future release once the accident_lookup2 dictionary is loaded.