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

Topic Options
Rate This Topic
#204397 - 12/06/11 10:41 PM Brief buzzing from breaker
Hemingray Offline
Member
Registered: 04/19/05
Posts: 199
Loc: 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
Top
Work Gear for Electricians and the Trades
#204398 - 12/06/11 11:39 PM Re: Brief buzzing from breaker [Re: Hemingray]
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9039
Loc: 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
Top
#204402 - 12/07/11 06:39 AM Re: Brief buzzing from breaker [Re: Hemingray]
harold endean Offline
Member
Registered: 02/16/02
Posts: 2233
Loc: Boonton, NJ
Does the breaker feel warm? That could also be from a lose connection.
Top
#204404 - 12/07/11 08:44 AM Re: Brief buzzing from breaker [Re: Hemingray]
twh Offline
Member
Registered: 03/11/04
Posts: 901
Loc: Regina, Sask.
Some breakers buzz and some transformers and ballasts buzz. Replace them when the annoyance factor makes the cost worthwhile.
Top
#204445 - 12/09/11 08:06 PM Re: Brief buzzing from breaker [Re: Hemingray]
Hemingray Offline
Member
Registered: 04/19/05
Posts: 199
Loc: Lehigh Acres, FL
It's stopped doing it at this point.
_________________________
Cliff
Top
#204450 - 12/10/11 12:24 AM Re: Brief buzzing from breaker [Re: Hemingray]
Scott35 Offline

Broom Pusher and
Member
Registered: 10/19/00
Posts: 2707
Loc: 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!
Top
#204475 - 12/12/11 06:32 AM Re: Brief buzzing from breaker [Re: Hemingray]
harold endean Offline
Member
Registered: 02/16/02
Posts: 2233
Loc: 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
Top

Member Spotlight
Member Since: 08/22/05
Posts: 44
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 30 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
Scotto, Freecrowder, clee512, Jdscott2005, FAIZAN

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