Pulled the electrical permit for wiring my shed/shop today, but have a couple questions:
The wiring will be stranded AWG12 THHN run in EMT. I plan to have two 20A circuits for the North and West walls (alternating outlets), and another two for the east and south walls. If I understand the NEC, I can use a shared ground wire for the two circuits on the same walls as long as the grounding wire is equal in size to the largest conductor. Is this correct?
If I do the above, could there be a problem with nuisance tripping of the GFCI protection on each circuit? I plan for the GFCI will be the first outlet on each circuit instead of a GFCI circuit breaker, mainly due to cost. Both hot and neutral line and load will flow through the first outlet, but the remaining outlets will be "Tee'd" off the circuit by dropping down from the main conduit running along the wall top plate.
Go
The wiring will be stranded AWG12 THHN run in EMT. I plan to have two 20A circuits for the North and West walls (alternating outlets), and another two for the east and south walls. If I understand the NEC, I can use a shared ground wire for the two circuits on the same walls as long as the grounding wire is equal in size to the largest conductor. Is this correct?
If I do the above, could there be a problem with nuisance tripping of the GFCI protection on each circuit? I plan for the GFCI will be the first outlet on each circuit instead of a GFCI circuit breaker, mainly due to cost. Both hot and neutral line and load will flow through the first outlet, but the remaining outlets will be "Tee'd" off the circuit by dropping down from the main conduit running along the wall top plate.
Go