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-   -   120 volt only load center? (http://www.diychatroom.com/f18/120-volt-only-load-center-37056/)

rgsgww 01-28-2009 03:05 PM

120 volt only load center?
 
I know I have seen them, but cannot find any. I am running 3 20 amp computer circuits and want to keep them on one phase, a 120 volt load center would be ideal. Anybody seen any (preferably QO).

HouseHelper 01-28-2009 03:41 PM

Quote:

Originally Posted by rgsgww (Post 220806)
I know I have seen them, but cannot find any. I am running 3 20 amp computer circuits and want to keep them on one phase, a 120 volt load center would be ideal. Anybody seen any (preferably QO).

If you mean one leg of your panel, just alternate breakers.

jerryh3 01-28-2009 04:16 PM

I will sell you a 120V only panel. They're a little expensive. Just send me $100 and I'll send it to you and give you the instructions on how to hook it up. Just ignore one screw terminal and you'll have to skip breakers. Make check payable to ...

220/221 01-28-2009 04:25 PM

I don't think it is illegal to install a jumper on the main lugs.

rgsgww 01-28-2009 05:05 PM

Quote:

Originally Posted by 220/221 (Post 220876)
I don't think it is illegal to install a jumper on the main lugs.


A jumper? Makes sense. I'll have to see if its ok.

frenchelectrican 01-28-2009 05:08 PM

It can be done by using the jumper IMO just make sure you mark the cover panel stated 120 volts only ditto inside as well to make sure someone is paying attetion to this one.

Merci,Marc

rgsgww 01-28-2009 05:14 PM

Quote:

Originally Posted by frenchelectrican (Post 220905)
It can be done by using the jumper IMO just make sure you mark the cover panel stated 120 volts only ditto inside as well to make sure someone is paying attetion to this one.

Merci,Marc


What would you call this jumper? Any name? I have searched and can't find real results.

InPhase277 01-28-2009 05:29 PM

I would call the jumper a piece of wire. You could strip the hot a few inches down from the end and loop it through the first lug and on to the second, that way there is only one wire per lug.

frenchelectrican 01-28-2009 05:33 PM

Quote:

Originally Posted by rgsgww (Post 220907)
What would you call this jumper? Any name? I have searched and can't find real results.


Normally in my tougne { langaune } it called " Fil de sauteur " it mean jumper wire { translated from French}

or can use what some of the electricians called " jumper bar " that work as well.

I will wait and see what other have better suggest here.

Merci,Marc

frenchelectrican 01-28-2009 05:37 PM

Quote:

Originally Posted by InPhase277 (Post 220919)
I would call the jumper a piece of wire. You could strip the hot a few inches down from the end and loop it through the first lug and on to the second, that way there is only one wire per lug.

Maintenant qu'est la bonne faon de le faire pour le jeu en haut et aussi c'est plus sr cette voie.


{Now that is good way to do this for the set up and also it is safer this way.}

Merci,Marc

micromind 01-28-2009 06:14 PM

I design and build industrial control panels once in a while, it's very common to use a single-phase panel and jumper the two hots together, then feed it with a 30 - 60 amp 120 volt circuit.

The only possible code problem I can see is you'd have more than one wire under a lug that might not be listed for more than one wire. (110.14A) I've never had an inspector turn one down yet. The solution would be to wirenut the feed with two pigtails, and land each one under a lug. Inphases idea would likely be OK though.

Rob

P.S. One possibility is a Square D QO35FM30TTF/S. This is a 2 wire panel designed for a small travel trailer. It's designed for a QO breaker to be installed as a main, I don't know if it has a main lug or not. It has 3 spaces + the main.

jerryh3 01-28-2009 06:48 PM

Quote:

Originally Posted by rgsgww (Post 220907)
What would you call this jumper? Any name? I have searched and can't find real results.

It's a "jumping from one bus to the other bus" jumper.

rgsgww 01-28-2009 07:07 PM

Thank you all very much:) You have saved me alot of time and trouble!

chris75 01-28-2009 07:18 PM

okay, now the stupid question, what purpose does it serve to keep them on one leg of a single phase service? I am completely confused.... ( is this a single phase service? )

rgsgww 01-28-2009 07:22 PM

Quote:

Originally Posted by chris75 (Post 220993)
okay, now the stupid question, what purpose does it serve to keep them on one leg of a single phase service? I am completely confused.... ( is this a single phase service? )


Its just because computer equipment will be on the circuits, and that they will be connected together. I dont want the voltage difference. Computer PSUs and mwbc don't mix very well.

I am thinking about a load center because I'm getting tight on space.


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