ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#168581 - 09/09/07 06:34 PM Resetting breakers under incandescent loads.
BigB Offline
Member
Registered: 03/31/04
Posts: 719
Loc: Tucson, AZ USA
I have had this happen twice now, two different customers. A circuit breaker will not reset, it will snap open, acting like there is a short circuit. In looking for the short circuit, I discovered there were lighting loads turned on. Once these loads were turned off, the breaker will reset fine, and stay set when the lights are switched back on. Once it was a new cutler hammer, the last one was a fairly new GE. I am figuring it is the low resistance of the cold tungsten filaments not allowing the breaker to reset.

The loads were not great, the first time it was a single incandescent bulb, this last one was three cans. The only thing both had in common were 3 way switching, but I can't see how that would matter. Any ideas or anyone else experience this??


Edited by BigB (09/09/07 06:35 PM)
Top
Work Gear for Electricians and the Trades
#168586 - 09/09/07 07:21 PM Re: Resetting breakers under incandescent loads. [Re: BigB]
Clydesdale Offline
Member
Registered: 11/25/04
Posts: 138
wow, never heard of that before...(5 years only in the business)...to my knowledge a GE breaker will hold fast with a dead short for quite some time, pretty strange it would not reset under the conditions you described...interesting, very.


Edited by Clydesdale (09/09/07 07:21 PM)
Top
#168590 - 09/09/07 07:45 PM Re: Resetting breakers under incandescent loads. [Re: Clydesdale]
wis-sparky Offline
Member
Registered: 07/14/05
Posts: 16
Loc: Wisconsin
I think it has to do with all of the poor quality bulbs being sold now - I've run across this twice before.
Top
#168593 - 09/09/07 08:05 PM Re: Resetting breakers under incandescent loads. [Re: wis-sparky]
frenchelectrican Offline
Member
Registered: 02/06/03
Posts: 939
Loc: Wi/ Paris France { France for ...
i heard about it as well but depending how many lightbulbs and type it was on the circuit it will affect it but if that keep tripping the breaker you can try to use the high magatinc swd breaker [ kinda like specal order breaker ] that will help to get by the montarly load

Merci , Marc
_________________________
Pas de problme,il marche n'est-ce pas?"(No problem, it works doesn't it?)

Top

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 43 Guests and 10 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 47
HotLine1 43
gfretwell 19
Ruben Rocha 12
Trumpy 9
 
Newest Members
KrmtFrg, Stack, Scotto, Freecrowder, clee512

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals