120 volt outlet off of 240 volt line.

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  #1  
Old 08-10-14, 06:00 PM
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120 volt outlet off of 240 volt line.

I need to wire a 120 volt outlet off of the 240 volt line running to my well pump.
I know that I will be using one of the hot wires, but I'm not sure exactly how to run the wires. I have an outside box and a 20 amp gfi outlet.


Thanks!

Lamar
 
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Old 08-10-14, 06:17 PM
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If you have no neutral you can't. If the 240 breaker is greater than 20 amps you can't.
 
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Old 08-13-14, 01:54 PM
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There's a separate line sticking out of the ground near the well that turns out to be 220v also. It's also three wire black, white and ground. Would installing a single pole breaker then attaching the black wire to the breaker, the white wire to the neutral bar, and the ground wire to the ground bar work?
 
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Old 08-13-14, 01:57 PM
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How would you run it to your well pump? How close is the well pump to the house, or where the breaker panel is located? If close, you could replace the existing 12-2 UF or well cable with 12-3 wg uf or well cable if it is in conduit. That would give you the neutral you need.
 
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Old 08-13-14, 02:16 PM
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The well pump is on a separate line. This line is running to nothing. It's just sticking out of the ground with wire nuts on it. I want to use it to install a 120v outlet.
 
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Old 08-13-14, 02:45 PM
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OK, you said it was running to your well pump. Is it attached to your well pump? What are the colors of the wires and is it in conduit, or is it underground feeder cable.
 
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Old 08-13-14, 03:18 PM
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Sorry for the misunderstanding.. Forget about the well pump it's no longer in the picture. The wire is not in conduit. It's just sticking out of the ground with a black, white and ground wire. I have no idea what it had been used for. My brother bought the house a few months back,
 
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Old 08-13-14, 03:38 PM
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Depending on whether or not it is gray coated cable (UF), it could be used for the circuit you wish to employ. If it has a white or yellow casing, it is not approved for buried applications. Yes, you may connect it to a single breaker (black) with the white to the neutral bar and the bare to the grounding bar. The breaker must be sized to the wire, so make sure you adhere to that (14 = 15 amp, 12 = 20 amp) Verify what your load will be on the other end, too.
 
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Old 08-13-14, 03:43 PM
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It is gray coated and 12 gauge. Thanks for the help.
 
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