I ran 12/3 plus ground wire to a garage I built. I am assuming I can get two 20 amp circuits out of it. The black and the red wires will be wired to separate 20 amp breakers and the white will be wired to the neutral bar, the ground to the ground bar. So in effect the two circuits will be sharing a common neutral. Is this correct? Just want to make sure before I do it.
Yes, this is very common and acceptable practice. However, you'll need to feed these circuits from a 2 pole 20 amp breaker, and not separate single pole breakers.
Yes, but be sure to use two single pole breakers to protect the two separate circuits. Any GFIs, (which garage circuits now require), will have to be in the garage, downstream from the 'split' in the neutral. (Wire-through first outlet on the circuit.)
I forget approximately what the colorings are meant to be without checking, yet a meter with insulated probes could be a terrific theory extremely than shifting wires at random. it extremely is conceivable your breaker has tripped if there is not any capacity on the field. even once you be attentive to what the colorings are meant to be, it extremely is a terrific theory to envision with a meter in case the unique builder did something weird and wonderful, and you have lost music of the way it replaced into initially under pressure.
Yes, right on the money. Often done to reduce costs too.
Yes they both go to ground and 20 amp. in correct for 12 gage wire.
