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-   -   Noma fan forced wall heater 240v (http://www.diychatroom.com/f18/noma-fan-forced-wall-heater-240v-98120/)

Stevec1234 03-12-2011 11:40 AM

Noma fan forced wall heater 240v
 
Hello, I am trying to install a noma wall heater, I have a Westinghouse 200 amp panel and have installed a stab lok sub panel powered by a 60 amp breaker from the main. I have wired from the sub for lights etc and used a 2 pole 20 amp breaker with 12/2 wire going to the heater. The heater did not work checked for power at the heater and had power at both legs, everything looks fine it should work, so I disconnected a 240 wire in another room from a baseboard heater, hooked up the new Noma and it worked. There is something going on with the power in the sub or the breaker in the sub but for the life of me I have no idea other than maybe the wrong 20 amp 2 pole breaker ???? I just don't know. Has anyone any ideas.

Grampa Bud 03-12-2011 11:54 AM

Are both legs of the 60 amp ganged breaker for the sub live? They should both read 120VAC from the term to ground. Do you get 120VAC from each screw term on your ganged 20 amp breaker to ground? It sounds like one of your legs from the sub panel to your heater may be neutral (or ground) instead of 120 VAC

Stevec1234 03-12-2011 12:39 PM

Noma heater
 
Hi thanks for the come back, checked both legs I have power 119 v at each one don't have an expensive tester so probaby is 120v. I disconnected the 12/2 from the sub 20 amp breaker and attached it to a 20 amp breaker in the main and the heater works. I then tried another 240v breaker in the sub and connected the wires to it and the heater doesn't work. I checked for power at the legs connected to the heater and had 119v there, so there seems to be power but maybe the wrong kind ?????

a7ecorsair 03-12-2011 01:24 PM

Quote:

Originally Posted by Stevec1234 (Post 607887)
Hi thanks for the come back, checked both legs I have power 119 v at each one don't have an expensive tester so probaby is 120v. I disconnected the 12/2 from the sub 20 amp breaker and attached it to a 20 amp breaker in the main and the heater works. I then tried another 240v breaker in the sub and connected the wires to it and the heater doesn't work. I checked for power at the legs connected to the heater and had 119v there, so there seems to be power but maybe the wrong kind ?????

Since it is a 240 volt heater, why are you measuring the each leg to ground? You should be measuring across the two feeds. Is your breaker connecting to opposite legs in the sub panel? Have you measured the power across the two connections at the breaker?

Stevec1234 03-12-2011 01:38 PM

Noma heater
 
As you can tell I'm not an electrician, anyway I have 240 v across the 60 amp and 240v across the legs connecting to the sub. I don't get a reading at all when testing across the 20 amp breaker.

a7ecorsair 03-12-2011 01:45 PM

That's because the breaker doesn't connect to opposite legs of the panel and that is why the heater doesn't work. You need a two pole not a tandem breaker.

Stevec1234 03-12-2011 02:01 PM

Noma heater
 
I wish it was that easy the breakers are 2 pole I get the same reading on the 30 and 40 amp, as well maybe there is something bad in the sub I bought it at a restore store. For some reason I must not be getting power from both legs coming from where the legs are attached to the sub to where the breakers pick it up.

a7ecorsair 03-12-2011 04:56 PM

Well, you said there is 240 volt power to the so you know that part is ok. Is there a main breaker in the sub or do the feed wires connect directly to the bus bars? Maybe your two pole breaker is bad? Have you tried a different breaker? What you can do, depending on how many breakers are installed, is turn off power to the sub and pop all the breaker out and take a good look around at the bus bars. Also look and see how the bus bars are orientated. A two pole breaker will have two connections on the back. They have to connect to opposite bus bars. Is the two pole breaker approved for the panel? In other words, is it made for this panel?

a7ecorsair 03-12-2011 05:06 PM

There are several places on the web that discuss the problems related to FPE Stab Lok panels. You may want to consider getting a different sub panel.

Stevec1234 03-12-2011 05:30 PM

Noma heater
 
Hi there I figured it out, a buddy of mine has the same panel (stab lok). On these panels it matters where you put the doubles, they have to straddle an insulator piece, I istalled them between the insulators that's why I didn't get 240v. Thanks for the ideas it gave me ideas of where to look for the problem. It's great to have a site where you can go to ask questions. Thanks again.


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