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Cycling of Tripped Circuit Breakers #51066
04/20/05 02:18 PM
04/20/05 02:18 PM
I
iscb  Offline OP
Junior Member
Joined: Apr 2005
Posts: 1
Orlando, Fl, USA
Is there any code, standard, reference, or documentation that states how many times a circuit breaker can be cycled safely after it has tripped? Also, are there a set number of times a circuit breaker can trip before its overcurrent properties begin to degrade?

Work Gear for Electricians and the Trades
Re: Cycling of Tripped Circuit Breakers #51067
04/20/05 07:02 PM
04/20/05 07:02 PM
B
Bob  Offline
Member
Joined: Feb 2002
Posts: 182
Mobile, AL, USA
Its not in the code but the MFG should be able to advise you.

Re: Cycling of Tripped Circuit Breakers #51068
04/20/05 07:03 PM
04/20/05 07:03 PM
E
e57  Offline
Member
Joined: May 2003
Posts: 2,876
S.F.,CA USA
A safe answer is once! Really, I don't know..... Good question!


Mark Heller
"Well - I oughta....." -Jackie Gleason
Re: Cycling of Tripped Circuit Breakers #51069
04/20/05 08:05 PM
04/20/05 08:05 PM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
I guess it depends on if the CB opened on overload or on short circuit.
Some larger CBs are expensive, and assuming the internals are compromised after one or two overcurrent conditions could get expensive.
There are companies that test CBs.
Maybe that would be the way to go if you are talking about larger commercial / industrial systems.

It is a good question.


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