View Full Version : How do I get 110 from 220
Larry1952
Oct 16, 2010, 03:26 PM
I have a well that runs on 220, I want to install a 110 out let in the well house. And maybe a 110 light how do I do it, thanks; Larry
ma0641
Oct 16, 2010, 04:56 PM
Your well is most likely a 3 wire system, 2 hots and a ground. 120V needs a neutral. You will need to run a separate feed to the well house. If there is a separate disconnect in the well house, open it up and count the wires.
Stratmando
Oct 16, 2010, 05:10 PM
You could run 4 conductors from the house, and have a sub panel, you can get your 120 and 240 volts and still not be obsolete.
Maybe 2 #6's, an 8, and a 10 for a little 60 amp subpanel? I not a great distance, and you could use 3/4" PVC Conduit.
tkrussell
Oct 17, 2010, 05:10 AM
You can get a small transformer, 240 volt to 120 volt, say 2000 VA, put at the well end, have it feed a 2 circuit panel at the well.
This will eliminate the need of running any new wire.
ma0641
Oct 17, 2010, 07:09 AM
TK. I thought that they wanted to keep the 240 and split off a 120. If they only have 3(which we are not sure of) wires and keep the 240, where does the neutral come from for the 120?
tkrussell
Oct 18, 2010, 02:36 AM
One leg of the 120 volt output of the transformer needs to be grounded.
MA0641, are you an electrician?
ma0641
Oct 18, 2010, 12:09 PM
TK. No.I have done a lot of Habitat for Humanity wiring under an electrician and have wired 2 houses of my own. On the transformer issue, the ground acts as a neutral? I have done 120 to 12V and 24V, not 240 down. That's why I asked THX, Brian
Stratmando
Oct 18, 2010, 01:43 PM
The ground and Neutral are at the same potential, zero volts between the 2, but need to be separate, the neutral carries current, the ground carries current if there is a fault.