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

Topic Options
Rate This Topic
#51066 - 04/20/05 11:18 AM Cycling of Tripped Circuit Breakers
iscb Offline
Junior Member
Registered: 04/20/05
Posts: 1
Loc: 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?
Top
Work Gear for Electricians and the Trades
#51067 - 04/20/05 04:02 PM Re: Cycling of Tripped Circuit Breakers
Bob Offline
Member
Registered: 02/05/02
Posts: 182
Loc: Mobile, AL, USA
Its not in the code but the MFG should be able to advise you.
Top
#51068 - 04/20/05 04:03 PM Re: Cycling of Tripped Circuit Breakers
e57 Offline
Member
Registered: 05/27/03
Posts: 2876
Loc: S.F.,CA USA
A safe answer is once! Really, I don't know..... Good question!
_________________________
Mark Heller
"Well - I oughta....." -Jackie Gleason
Top
#51069 - 04/20/05 05:05 PM Re: Cycling of Tripped Circuit Breakers
Redsy Offline
Member
Registered: 03/28/01
Posts: 2056
Loc: 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.
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 (), 52 Guests and 8 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
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

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