Will this work for shop sub panel
2
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Was this Answer Helpful ? Yes, the #4 THHN will work as long as it is dual rated THHN/THWN and all 4 conductors are installed in conduit at least 18 inches deep. I would bump the breaker up to a 60 amp to be sure the wire will fit the lugs, it will be the same price as a 50 amp breaker.
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