Re: Wiring welder for garage?
This all gave me a headache!
If your sub feed from the house panel to the garage panel is a romex (plastic) cable red/black/white/ground, itís considered a three wire cable, the ground is never included in the description.
If itís run in conduit, you need at least the red/black/white, the ground can be accomplished by the conduit. Same holds true if itís a metallic cable such as BX or AC cable.
Of course, having a ground wire is always better. Current BX and AC cable has a green ground wire, older stuff does not.
In the house panel, the sub feed should have the red & black to a two pole breaker, the white to the neutral bar and the ground to the panel box or ground bar if there is one.
This feed to the garage MUST be on a breaker in the house panel, itís not safe, proper or accepted to have it on the incoming feed lugs.
In the sub panel in the garage, the red & black should go to the two line lugs, the white to the neutral bar and the ground to the panel box or ground bar.
If the welder is 110 volts, it should be on a 20 amp single pole breaker, black to breaker, white to neutral bar. You said itís 10 gauge wire, good, use it.
If your compressor is 220, itíll more than likely need a 30 amp circuit. Red & black (or black & white) wires to a two pole 30 amp breaker, no neutral needed.
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1971 Monte Carlo SS454-496ci 600hp
1999 Trans Am-500hp
2003 Iszu Ascender XL Limited V8