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Old 1/17/19, 5:52 PM
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dwigger dwigger is offline
Certified Professional Inspector (CPI)
Join Date: Jul 2006
Location: Jenks, OK
Posts: 317
Default Re: 3 vs 4 wire feed to garage

Sub panels require a 4-wire feed. 2 hot, neutral and ground. If only a 3-wire is present, a separate isolated ground can be used at the sub panel location. (i.e. grounding electrode with ground conductor)

David A. Wigger

BASIS Inspections
Serving the greater Tulsa area

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