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#34733 02/21/04 08:45 PM
Joined: Dec 2002
Posts: 308
E
Edward Offline OP
Member
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:
AMERICAN ELECTRIC or AMERICAN (something)
It started with AMERICAN.

Advised the client to change the subpanel.

Edward.


Thanks
Edward
Joined: Jun 2003
Posts: 1,143
D
Member
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)

Joined: Aug 2002
Posts: 141
E
Member
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.
Bob

Joined: May 2002
Posts: 1,716
R
Member
American Electric manufactures replacement or reconditions old breakers for FP panels.

Roger

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

Joined: Apr 2001
Posts: 507
G
Member
I pinched a wire once with a wireway cover. The #10 THHN burned clean thru, the GE breaker never did trip.

It happens.

GJ

Joined: Sep 2002
Posts: 924
Likes: 1
N
Member
There was a company called American Switch later Zinsco/Amercan Switch.

Joined: Nov 2002
Posts: 793
Likes: 2
W
Member
Take a look at this web page on FPE "No Trip" brakers.
http://www.inspect-ny.com/fpe/fpepanel.htm

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.

Joined: Oct 2003
Posts: 289
:
Member
why exactly do the FP breakers not trip? what`s the background? Mechanic damage or Production fault?


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