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#214497 - 12/16/14 12:18 AM Square D Type QO 40A Tandem?
onilozay Offline
New Member

Registered: 12/15/14
Posts: 4
Loc: Berkeley, CA
Hi all,

I'm wondering if Square D Type QO Breakers come in tandem form (skinny taking up 1 slot only) for 30 & 40A. I can't seem to find them. I do find tandems in 15 & 20A though.

Reason : Installing arc-fault in a panel filled with all tandems (15/20), there is no more room. There are 3 double pole breakers each which take up 2 spaces. They are 40, 40, 30A.

So I'm not adding additional circuits, just arc-faults don't come in tandem. I'm trying to replace a 40, 40 or 30 with a skinny tandem and free up some room...otherwise replace panel.

Much appreciated.

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#214498 - 12/16/14 12:19 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]
onilozay Offline
New Member

Registered: 12/15/14
Posts: 4
Loc: Berkeley, CA
Forgot to mention, I'm only installing 1 arc-fault breaker, which is creating this space issue.

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#214499 - 12/16/14 12:58 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]
gfretwell Offline

Member

Registered: 07/20/04
Posts: 9045
Loc: Estero,Fl,usa
I have never seen them over 20a. You are going to end up with a panel change or a sub panel IMHO.
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Greg Fretwell

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#214501 - 12/16/14 06:39 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]
HotLine1 Offline

Member

Registered: 04/03/02
Posts: 6805
Loc: Brick, NJ USA
That's not something that I have seen. You may want to check Schneider website; or contact a local supply house that is a Sq D distributor. Not a 'big box' store, but a supply house.
_________________________
John

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#214502 - 12/16/14 06:49 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]
electure Offline

Member

Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
Double pole breakers can't replaced by tandems.

The double poles pick up both legs.
Tandems don't.

2 of them side by side won't be any help either. Handle ties won't fix the issue of the common trip requirement.


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#214514 - 12/17/14 06:37 PM Re: Square D Type QO 40A Tandem? [Re: onilozay]
BigB Offline
Member

Registered: 03/31/04
Posts: 727
Loc: Tucson, AZ USA
You might have to install one of these next to the panel

http://www.leviton.com/OA_HTML/SectionDisplay.jsp?section=62350&minisite=10251

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