DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Electrical and Wiring > neutrals and grounds on same bar




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Old 11-24-2010, 01:35 PM  
HighDesertHomeOwner
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Along with the subject:

I plan to tap into my Air conditioner circuit for power into my small 120 sq feet shed.

The AC unit uses a 50 amp breaker, whereas a 30 amp will be plenty according to the faceplate of the AC unit.

The AC is 240 volt with ground. I plan to use such a ground as the neutral of my 120V supply into my shed, (and one of the hot, the black one, of the 240 volt as the hot of my 120 V into the shed).

Any coment as to safety?

The neutral and the ground are on the same bar in the only breaker panel in my house.

Will Ground Fault Interrupt in the shed still work?

I will be using a 15 amp breaker for the shed. The actual power for the shed will be very low, just for lights and a small electric drill, perhaps.

This is for myself, if I ever sell or rent this house out I will disconnect the power into my shed.

Thanks



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Last edited by HighDesertHomeOwner; 11-24-2010 at 01:42 PM.
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Old 11-24-2010, 05:07 PM  
speedy petey
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Quote:
Originally Posted by HighDesertHomeOwner View Post

The AC is 240 volt with ground. I plan to use such a ground as the neutral of my 120V supply into my shed, (and one of the hot, the black one, of the 240 volt as the hot of my 120 V into the shed).

Any coment as to safety?
Yes....

NO! NO! NO!
DO NOT do this. A ground and a neutral are two very different things. The fact that they are on the same bar in the main panel means NOTHING!
You do not have a neutral in this circuit and you CANNOT pull 120v from it. PLEASE DO NOT even attempt it. NOTHING you do will make it safe or correct.
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