My house is 150' long.
The main breaker box (pic 1) is at one end of the house and 2 Eaton Pullout Switches at the other end.
The pullout switches power 2 A/C evap coils (pic 3-6).
The pullout switches are fed from 40amp breakers at the main (pic 2).
I replaced 1 of the pullout switches with an Eaton BR48L box which has a 220 breaker for the ac and a 220 breaker for a well pump (pic 7).
I have a shed 105' away from these breakers. I wan to run an extension cord down there for some lights and light drill and bandsaw work BEFORE I get my main service put in to feed the shed.
I purchased 250' 10/2 UF-B wire to create a long extension cord.
My plan was to remove the well breaker and put in a 110 20 amp breaker for this new run but there is no neutral bar.
How can I get a 110 outlet, or breaker to wire the 10/2 wire to?
Best Answer
In that pico-panel, you have a major defect. You have the breakers incorrectly swapped. You have a 40A breaker on the thin wire and a 20A breaker on the thick wire. The thin wire is totally unprotected. Swap those breakers!
You are correct. Without a neutral, that pico-panel cannot support any 120V loads end of subject.
You cannot use UF-B as extension cord and I cannot imagine what you were thinking there. Being solid wire, it is not flexible like a cord must be. It is not designed to be flexed over and over. You need cordage such as SJOOW.
If one 10/2 UF-B is run in conduit the conduit must be 3/4" or larger. Nothing else can be in the conduit.
Honestly, I think your best bet is to run the proper and final feeder that you ultimately want from your main panel to the shed. I advise against having the power company drop you another service, because the power company has a new trick: they are charging people a "minimum provisioning charge" which, if you cancel service, becomes a "service availability fee". That is, they charge you for the fact that you could have a service drop if you wanted it. I now have 2 sites with 2 PoCo service drops each, and they charge us $60 a month per drop no kidding. They won't let us out of either one. So needless to say, if I have to haul power 1000' I'll feed off my existing service rather than order a new one.
Service size has no bearing on it; one is 240V/100A and another is 480V/1000A. Same $60.