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2 terminations on a QO breaker #80509 04/23/02 10:04 PM
Joined: Dec 2000
Posts: 4,283
electure Offline OP
Member
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 [Linked Image]

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

2017 / 2014 NEC & Related Books and Study Guides
Re: 2 terminations on a QO breaker #80510 04/23/02 10:20 PM
Joined: Apr 2002
Posts: 2,527
B
Bjarney Offline
Moderator
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.

Re: 2 terminations on a QO breaker #80511 04/23/02 10:30 PM
Joined: Apr 2002
Posts: 2,527
B
Bjarney Offline
Moderator
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).]

Re: 2 terminations on a QO breaker #80512 04/23/02 10:36 PM
Joined: Oct 2000
Posts: 3,960
Bill Addiss Offline
Member
Bjarney,

Beat me to it!

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

Bill


Bill
Re: 2 terminations on a QO breaker #80513 04/23/02 10:41 PM
Joined: Dec 2000
Posts: 4,283
electure Offline OP
Member
Gee, guys!
Thanks! The answer was in my hands!
You're the best...S [Linked Image]

Re: 2 terminations on a QO breaker #80514 04/24/02 06:53 AM
Joined: Mar 2001
Posts: 2,056
R
Redsy Offline
Member
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).]

Re: 2 terminations on a QO breaker #80515 04/24/02 07:57 AM
Joined: Oct 2000
Posts: 3,960
Bill Addiss Offline
Member
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


Bill
Re: 2 terminations on a QO breaker #80516 04/24/02 07:12 PM
Joined: Dec 2000
Posts: 4,283
electure Offline OP
Member
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! [Linked Image]

Re: 2 terminations on a QO breaker #80517 04/25/02 10:09 AM
Joined: Jul 2001
Posts: 599
J
JBD Offline
Member
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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