View Single Post
 
Old 1/17/19, 5:52 PM
dwigger's Avatar
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

Oklahoma's Guaranteed Home Inspection
www.basisinspections.com
david@basisinspections.com
918.381.8952
Lic. #70000551
Angie's List Super Service Award winner: 2011, 2012, 2013, 2014, 2015, 2016, 2017