ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
Top Posters(30 Days)
Potseal 10
Recent Posts
Old decora style outlets
by Lostazhell. 04/22/17 07:59 PM
Dimmable LED 2x4 lay in fixtures
by gfretwell. 04/22/17 01:14 PM
Permit Snafus...AHJs and Contractors Jump in
by gfretwell. 04/22/17 01:11 PM
How do you find a good employee?
by HotLine1. 04/22/17 10:44 AM
Electrode boilers question
by SteveFehr. 04/21/17 08:32 AM
New in the Gallery:
SE cable question
Popular Topics(Views)
234,485 Are you busy
169,123 Re: Forum
162,490 Need opinion
Who's Online Now
0 registered members (), 56 guests, and 9 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate This Thread
#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: 9,069
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: 905
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



Member Spotlight
Lostazhell
Lostazhell
Bakersfield, CA (Originally Orange Co.)
Posts: 1,429
Joined: February 2004
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: 0.016s Queries: 15 (0.003s) Memory: 0.7837 MB (Peak: 0.9428 MB) Zlib enabled. Server Time: 2017-04-23 13:59:49 UTC