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-   -   House is only 120? (http://www.diychatroom.com/f18/house-only-120-a-154828/)

benbradford 08-25-2012 02:57 PM

House is only 120?
 
I just got everything that I need to add a 240v sub panel, and discovered I might have a problem.
There are only 2 wires coming in from the meter.
1 goes to the nuetral bar, and the other goes to the right side of the breaker bar, but then is jumped to the left side of the breaker bar. The breakers only use the left or right side with the exception of a space in the bottom that could be a two pole breaker spot that attaches to both the left and the right.
Struggling with the fact that this house was probably built in the 20's and may only have 120.
There is no 2 pole breakers on the panel.
The dryer is a stacked 120v.
Gas everthing.
I could take a picture, but would be a pain to make it helpful(pull breakers)..

jbfan 08-25-2012 06:09 PM

With only 2 wires feeding the panel, you do have a 120v service.
Besides the subpanel, were you needing to add a 240 load?

Bugman1400 08-25-2012 06:12 PM

Sounds like you'll need a new service drop from the POCO. I'm sure they will need an inspection before they connect. I've seen dozens of these small, shotgun type houses that use strictly 120V, 60A to 100A service.

benbradford 08-25-2012 06:24 PM

Ya, it is a 125 amp 12 circuit panel... Decided it was a 120v for sure. I guess I can't run a 240 sub panel, so my next best option is either 4 20a circuits or a subpanel that supplies 70 amps or so. Is the subpanel possible? What would the wiring theory be? I already have everything for the 240 panel. I ran a 30ft price of 6/3 wire to a new panel. Is this possible?

k_buz 08-25-2012 07:01 PM

60A @ 120V isn't a large service at all. What electric loads are existing in the home?

benbradford 08-25-2012 07:36 PM

No, the house is 125a 120v... As mentioned above 2 bedroom house with all gas appliances with the exception of stacked 120v dryer/washer.

Could I run 2 50a single pole breakers to each side of subpanel and mount 2 25a breakers on each side?

k_buz 08-25-2012 07:48 PM

125A is the typical rating of the panel, not usually the rating of the service. Do you have a main breaker? Does that say 125 on the handle? Is there a main breaker? What size wire is feeding the panel?

It seems quite out of the ordinary to skimp on running only 120V, but to install wire large enough to handle 125A.

benbradford 08-25-2012 08:24 PM

No main breaker... Huge service wire...

k_buz 08-25-2012 08:41 PM

A picture would be really helpful. Is this a house?

benbradford 08-25-2012 08:48 PM

Ya, house. At work now...

benbradford 08-25-2012 08:52 PM

Picture of wiring schematic at

http://www.homebrewtalk.com/f170/hou...y-120v-349960/

k_buz 08-25-2012 08:55 PM

The diagram doesn't show what is actually there. Unfortunately it is of no help.

benbradford 08-25-2012 09:12 PM

I will post pics later... Assuming 120v 120a service, how close to 100a 120v subpanel could I get with 6/3 wire?

Bugman1400 08-25-2012 10:20 PM

For me, since you said that there is no main breaker, I don't need to see the panel, I need to see a list of all your loads.......for the main panel and your proposed subpanels.

benbradford 08-25-2012 10:29 PM

3 20 amp 4 15 amp... 4 open spaces in panel. How much is the most I could send to a subpanel?


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