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2 terminations on a QO breaker #80509
04/23/02 10:04 PM
04/23/02 10:04 PM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,274
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 [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
04/23/02 10:20 PM
B
Bjarney  Offline
Moderator
Joined: Apr 2002
Posts: 2,527
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.

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

Re: 2 terminations on a QO breaker #80512
04/23/02 10:36 PM
04/23/02 10:36 PM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,901
NY, USA
Bjarney,

Beat me to it!

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

Bill

Re: 2 terminations on a QO breaker #80513
04/23/02 10:41 PM
04/23/02 10:41 PM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,274
Fullerton, CA USA
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
04/24/02 06:53 AM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
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).]

Re: 2 terminations on a QO breaker #80515
04/24/02 07:57 AM
04/24/02 07:57 AM
Bill Addiss  Offline
Member
Joined: Oct 2000
Posts: 3,901
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

Re: 2 terminations on a QO breaker #80516
04/24/02 07:12 PM
04/24/02 07:12 PM
electure  Offline
OP
Member
Joined: Dec 2000
Posts: 4,274
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! [Linked Image]

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