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#204397 - 12/07/11 02:41 AM Brief buzzing from breaker  
Hemingray  Offline
Member
Joined: Apr 2005
Posts: 199
Lehigh Acres, FL
Have an interesting issue here:

Turning on the outside christmas lights (I have alot of them), the 20A breaker for the circuit that some of them are on, buzzes briefly before quieting down. Circuit in question is a dedicated 20A line for this purpose, one of two installed. The other one does not buzz. Perhaps a worn breaker needing replacement soon?


Cliff

Work Gear for Electricians and the Trades

#204398 - 12/07/11 03:39 AM Re: Brief buzzing from breaker [Re: Hemingray]  
gfretwell  Offline


Member
Joined: Jul 2004
Posts: 9,080
Estero,Fl,usa
Put a clamp on it and see what you are pulling. This is probably telling you that you have exceeded the 16a continuous load you are allowed.


Greg Fretwell

#204402 - 12/07/11 10:39 AM Re: Brief buzzing from breaker [Re: Hemingray]  
harold endean  Offline
Member
Joined: Feb 2002
Posts: 2,233
Boonton, NJ
Does the breaker feel warm? That could also be from a lose connection.


#204404 - 12/07/11 12:44 PM Re: Brief buzzing from breaker [Re: Hemingray]  
twh  Offline
Member
Joined: Mar 2004
Posts: 915
Regina, Sask.
Some breakers buzz and some transformers and ballasts buzz. Replace them when the annoyance factor makes the cost worthwhile.


#204445 - 12/10/11 12:06 AM Re: Brief buzzing from breaker [Re: Hemingray]  
Hemingray  Offline
Member
Joined: Apr 2005
Posts: 199
Lehigh Acres, FL
It's stopped doing it at this point.


Cliff

#204450 - 12/10/11 04:24 AM Re: Brief buzzing from breaker [Re: Hemingray]  
Scott35  Offline

Broom Pusher and
Member
Joined: Oct 2000
Posts: 2,707
Anaheim, CA. USA
I have heard Buzzing emitted from correctly installed and functioning MCCBs.
Always figured the sound is Generated from the Spring in the Reset Assembly.

Would be nice to know exactly which entity is vibrating, and what factors determine it to be Audible.

-- Scott


Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!

#204475 - 12/12/11 10:32 AM Re: Brief buzzing from breaker [Re: Hemingray]  
harold endean  Offline
Member
Joined: Feb 2002
Posts: 2,233
Boonton, NJ
Isn't there usually a lot of buzz around Christmas time?



Sorry for that bad joke! I just had to say it. smile



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