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Can I wire a 220v and 110v on same 10-3 wire
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Posted by proge (My Page) on Fri, Jul 3, 09 at 20:35
| I am running a 220v 3 hp air compressor to my garage beside the house.I have run both wires from the main breaker to separate 30 amp breaker.What I was wondering If I could run a 110v to one of the legs of my 220v and get 110v.I am useing 10-3 wiring.It would only be for a light and maybe a drill once in a while.I would use black-hot lead,red-hot lead,bare copper for ground,white would have to be neutral for 110v. Any help would be apreciated. thanks proge |
Follow-Up Postings:
RE: Can I wire a 220v and 110v on same 10-3 wire
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| Each leg of your 220 is 110. Tap one of the legs and the white neutral to get your 110. Mount a fuse box next to where you tap off the 220 line and protect the new circuit with a 15 or 20 amp fuse. |
RE: Can I wire a 220v and 110v on same 10-3 wire
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| "Tap one of the legs and the white neutral to get your 110. Mount a fuse box next to where you tap off the 220 line and protect the new circuit with a 15 or 20 amp fuse." Ouch! That's not legal my my jurisdiction. I would suggest feeding the 10/3 into a small subpanel in the garage. Run a DP 30A breaker for the compressor and a separate SP 15A breaker from one of the hot legs, doesn't matter which, for the 120V circuit. |
RE: Can I wire a 220v and 110v on same 10-3 wire
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| Lot better than my house where they tapped a 14/2 off a 30 amp dryer line. |
RE: Can I wire a 220v and 110v on same 10-3 wire
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| Big Bird has it right. Run the 10-3 to a sub-panel and then provide breakers for your various circuits. The 30 amp breaker provides protection to the overall circuit and the breakers in the sub-panel protect the lower gauge wire for the outlets. You need to pay attention to how the grounding and the neutral is wired to the sub-panel. Look it up how to do it properly. |
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