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#214497 - 12/16/14 03:18 AM Square D Type QO 40A Tandem?  
onilozay  Offline
New Member
Joined: Dec 2014
Posts: 4
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.


Work Gear for Electricians and the Trades

#214498 - 12/16/14 03:19 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]  
onilozay  Offline
New Member
Joined: Dec 2014
Posts: 4
Berkeley, CA
Forgot to mention, I'm only installing 1 arc-fault breaker, which is creating this space issue.


#214499 - 12/16/14 03:58 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,136
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.


Greg Fretwell

#214501 - 12/16/14 09:39 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]  
HotLine1  Online Content


Member
Joined: Apr 2002
Posts: 6,875
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

#214502 - 12/16/14 09:49 AM Re: Square D Type QO 40A Tandem? [Re: onilozay]  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,262
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.



#214514 - 12/17/14 09:37 PM Re: Square D Type QO 40A Tandem? [Re: onilozay]  
BigB  Offline
Member
Joined: Mar 2004
Posts: 719
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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