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About Bob Sponaugle
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Just about any home wiring question. (not appliance repair) I have done all kinds of home wiring for myself, including adding a new breaker box, etc. Please, questions from North America only. Please be specific with details.

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Electrical Wiring in the Home - add 110 volt from 220 circuit

Expert: Bob Sponaugle - 7/1/2009

Question
I have a 220 volt well pump supplied from a panel box in my home. The wire from my home goes to a disconnect switch in the well house. The disconnect switch has 2 black wires attached and a white wire attached to a neutral bar. The wire to the pump is attached in the same manner. I ran a 110 line for a light from the bottom of the disconnect switch attaching the black wire to one side of the switch and the white wire to the neutral bar. This does not work. How can I get a 110 circuit from one side of this switch. Thanks.

Answer
Hi.

The pump should be on its own circuit, and nothing should be added.

Normally pumps do not require a neutral. From your description, it sounds like there is a neutral. But since your light is not working, perhaps it is not connected at the other end.

One hot wire plus one neutral should give you 110 volts.

I hope this helps.

Bob

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