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Adding sub panel feed
Question
I need a 40 amp sub panel in a workshop about 30 feet from the main panel. Will awg 12/3 (20a on each side of the master) work?
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Electrical
3 years
1 Answer
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Answer ( 1 )
Your question is a little confusing. You’re asking me for a 40 amp sub-panel and then you’re saying using a 20 amp wire. So no you would use at least a #10 wire on a 40 amp breaker.