ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Shout Box
Recent Posts
"Esoteric" countries and their wiring practices?
by winston_1. 04/23/19 02:34 PM
Norwegian power?
by Texas_Ranger. 04/20/19 06:27 PM
Welded Copper Connections
by gfretwell. 04/19/19 04:46 PM
Israel
by annemarie1. 04/18/19 02:35 PM
Water heater calculationsSo when I count calculati
by watersparkfalls. 04/13/19 12:43 PM
New in the Gallery:
What is this for?
Plug terminals
Who's Online Now
0 registered members (), 5 guests, and 14 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
Square D Type QO 40A Tandem? #214497
12/16/14 04:18 AM
12/16/14 04:18 AM
onilozay  Offline OP
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
Re: Square D Type QO 40A Tandem? [Re: onilozay] #214498
12/16/14 04:19 AM
12/16/14 04:19 AM
onilozay  Offline OP
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.

Re: Square D Type QO 40A Tandem? [Re: onilozay] #214499
12/16/14 04:58 AM
12/16/14 04:58 AM
G
gfretwell  Online Content

Member
Joined: Jul 2004
Posts: 9,348
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
Re: Square D Type QO 40A Tandem? [Re: onilozay] #214501
12/16/14 10:39 AM
12/16/14 10:39 AM
HotLine1  Offline

Member
Joined: Apr 2002
Posts: 7,084
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
Re: Square D Type QO 40A Tandem? [Re: onilozay] #214502
12/16/14 10:49 AM
12/16/14 10:49 AM
electure  Offline

Member
Joined: Dec 2000
Posts: 4,280
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.


Re: Square D Type QO 40A Tandem? [Re: onilozay] #214514
12/17/14 10:37 PM
12/17/14 10:37 PM
B
BigB  Offline
Member
Joined: Mar 2004
Posts: 742
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


Featured:

2017 Master Electrician Exam Preparation Combos
2017 NEC Electrician
Exam Prep Combos:
Master / Journeyman

 

Member Spotlight
Scott35
Scott35
Anaheim, CA. USA
Posts: 2,720
Joined: October 2000
Show All Member Profiles 
Top Posters(30 Days)
Popular Topics(Views)
254,566 Are you busy
190,791 Re: Forum
180,518 Need opinion
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Release build 20180101)
Page Time: 0.018s Queries: 15 (0.004s) Memory: 0.9775 MB (Peak: 1.1252 MB) Zlib enabled. Server Time: 2019-04-25 06:29:42 UTC