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#34733 - 02/21/04 08:45 PM First time happening to me.  
Edward  Offline
Joined: Dec 2002
Posts: 308
Today i accidently touched hot and the grounded wire. Bam,sparks,smoke...However. the 15Amp breaker did not trip.This is the first time i have seen this happening.

All i could make out from the cover plate:
It started with AMERICAN.

Advised the client to change the subpanel.



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#34734 - 02/21/04 08:54 PM Re: First time happening to me.  
DougW  Offline
Joined: Jun 2003
Posts: 1,143
North Chicago, IL
Wise choice.

Maybe the "grounded" conductor wasn't (at least at the panel) effectively grounded?

Did it pop the OCD at the main panel? (depending on the branch OCD size)

#34735 - 02/21/04 10:03 PM Re: First time happening to me.  
elecbob  Offline
Joined: Aug 2002
Posts: 141
I frequently have this problem on Federal Pacific and Zinsco panels. Customers freak out when I give them a demostration and I usually end up with a job for a panel change out. As a sidenote: I usually install Square D QO series panels.

#34736 - 02/21/04 10:32 PM Re: First time happening to me.  
Roger  Offline
Joined: May 2002
Posts: 1,716
American Electric manufactures replacement or reconditions old breakers for FP panels.


[This message has been edited by Roger (edited 02-21-2004).]

#34737 - 02/22/04 12:49 AM Re: First time happening to me.  
golf junkie  Offline
Joined: Apr 2001
Posts: 507
York, NE
I pinched a wire once with a wireway cover. The #10 THHN burned clean thru, the GE breaker never did trip.

It happens.


#34738 - 02/22/04 10:18 AM Re: First time happening to me.  
NORCAL  Offline
Joined: Sep 2002
Posts: 872
There was a company called American Switch later Zinsco/Amercan Switch.

#34739 - 02/22/04 06:11 PM Re: First time happening to me.  
wa2ise  Offline
Joined: Nov 2002
Posts: 782
Oradell NJ USA
Take a look at this web page on FPE "No Trip" brakers.

Was that one of these?

My father used to work for Federal in Newark NJ back in the early 1950's doing accounting type work. He used some of their stuff when he built our house, and I don't think he would have used a stab-lok panel if he was aware of any issues with them. That panel got replaced with a Square D QO panel recently.

#34740 - 02/22/04 06:30 PM Re: First time happening to me.  
:andy:  Offline
Joined: Oct 2003
Posts: 289
why exactly do the FP breakers not trip? what`s the background? Mechanic damage or Production fault?

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