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#80509 - 04/23/02 07:04 PM 2 terminations on a QO breaker
electure Offline


Member

Registered: 12/24/00
Posts: 4229
Loc: Fullerton, CA USA
OK, my butt's in a sling.
Had an existing SqD panelboard.
I think we discussed this here before, but I can't find it here or in the listings.
Aren't the QO C/B's rated for 2 wires terminated per breaker?
(Conductors are the same size, 20A C/B,#10)
Local AHJ wants me to prove it, but I'm fairly sure he would listen to a consensus

[This message has been edited by electure (edited 04-23-2002).]

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#80510 - 04/23/02 07:20 PM Re: 2 terminations on a QO breaker
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
Wire range and count used to be on a sticker just to the side of the termination. Show him one of the QOs--unless they've really changed, it looks pretty obvious.

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#80511 - 04/23/02 07:30 PM Re: 2 terminations on a QO breaker
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
See: http://ecatalog.squared.com/catalog/html/sections/01/17201002.htm#999119

"Circuit Breaker Wire Sizes QO
1 Pole
10-30 . . . (2) #14-10"

and maybe: [img]http://67.115.161.42/images/httpsq.htm[/img]



[This message has been edited by Bjarney (edited 04-23-2002).]

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#80512 - 04/23/02 07:36 PM Re: 2 terminations on a QO breaker
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Bjarney,

Beat me to it!

Look here: (check Footnote 'c') http://ecatalog.squared.com/catalog/html/sections/08/17208010.htm

Bill

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#80513 - 04/23/02 07:41 PM Re: 2 terminations on a QO breaker
electure Offline


Member

Registered: 12/24/00
Posts: 4229
Loc: Fullerton, CA USA
Gee, guys!
Thanks! The answer was in my hands!
You're the best...S

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#80514 - 04/24/02 03:53 AM Re: 2 terminations on a QO breaker
Redsy Offline
Member

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
The QOs usually have this information embossed on the side of the breaker.
Some of them have a sticker on the front.

BTW,
Whats with footnote "d" on Bill's link?

[This message has been edited by Redsy (edited 04-24-2002).]

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#80515 - 04/24/02 04:57 AM Re: 2 terminations on a QO breaker
Bill Addiss Offline
Member

Registered: 10/07/00
Posts: 4196
Loc: NY, USA
Redsy,

I have heard that before. (not the distance figure though) It has to do with the characteristics of the cable itself possibly having enough total (apparent or real?) leakage in it overall to be past the limit allowed by the GFCI.

Bill

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#80516 - 04/24/02 04:12 PM Re: 2 terminations on a QO breaker
electure Offline


Member

Registered: 12/24/00
Posts: 4229
Loc: Fullerton, CA USA
I went through the Van stock.
Curiously enough, I found a QOB rated for 1 CU or Al #10-14, a QO rated for 1 or 2 CU or Al #8-14, and several QOB rated 1 or 2 CU or Al #10-14. All are recent enough to have the little "red flag" indicator window for tripped condition.
I love the consistency!

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#80517 - 04/25/02 07:09 AM Re: 2 terminations on a QO breaker
JBD Offline
Member

Registered: 07/12/01
Posts: 599
Loc: WI, USA
Stop re-using those ancient breakers.

The little red flag indicator was added to the Square D QO line of devices around the mid-1960s (my 1967 catalog shows it). These early breakers had a box lug and so were rated for only 1 wire.

By 1975, they had switched to the current pressure-pad lug which accepts 2 wires on the 10-30A 1P non-GFI devices.

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