ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
twh 10
Admin 4
Recent Posts
Any UL 508 experts out there?
by sparkyinak. 05/21/17 08:57 PM
Heat pump conundrum
by sparkyinak. 05/21/17 08:49 PM
Interesting week
by HotLine1. 05/20/17 11:57 AM
Electrical Pricing Guide
by ElectricianBud. 05/18/17 12:17 PM
New in the Gallery:
SE cable question
Popular Topics(Views)
236,082 Are you busy
170,974 Re: Forum
164,094 Need opinion
Who's Online Now
0 registered members (), 48 guests, and 11 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#51066 - 04/20/05 02:18 PM Cycling of Tripped Circuit Breakers  
iscb  Offline
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

#51067 - 04/20/05 07:02 PM Re: Cycling of Tripped Circuit Breakers  
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.


#51068 - 04/20/05 07:03 PM Re: Cycling of Tripped Circuit Breakers  
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

#51069 - 04/20/05 08:05 PM Re: Cycling of Tripped Circuit Breakers  
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.



Member Spotlight
Admin
Admin
NY, USA
Posts: 3,443
Joined: October 2000
Show All Member Profiles 
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box
Powered by UBB.threads™ PHP Forum Software 7.6.0
Page Time: 0.010s Queries: 14 (0.003s) Memory: 0.7591 MB (Peak: 0.8901 MB) Zlib enabled. Server Time: 2017-05-23 05:02:45 UTC