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Thread: Gfci humming

  1. #1
    Join Date
    Sep 2008
    Posts
    28

    Gfci humming

    One of my clients called me to tell me her GFCI's in the kitchen were humming. I asked her what song were they humming ( all joking aside ). I have not been out to see yet but does anyone have some thoughts?
    Thanks in advance !!!!!!!!!!!!!!!!!!!!!!!!

  2. #2
    Join Date
    Aug 2009
    Location
    Connecticut
    Posts
    15

    My take.

    Ive heard breakers in the electrical panel have a hum under a load. But the closest thing to noise from a GFCI outlet is a studer from the reset button, and it makes a noise if its not prest firmly in.

  3. #3
    Join Date
    Sep 2004
    Location
    Durham, NC
    Posts
    5,224
    Other than just replacing it!

    IMO

    Sure it's time for 50 questions! Seriously...

    When did it start?

    What was plugged in?

    What was changed with respect to usuage of equipment?

    Any odd things done around the house lately.

    Ask the Age of it?

    On and on, Etc, Etc...

    Note if an Ham Radio's arounds, or if a neighbor install wireless anything, lately.
    If your even thirsty, your two quarts low.

  4. #4
    Join Date
    Nov 2005
    Location
    Canterbury, New Zealand
    Posts
    1,877
    I'm just disappointed that the OP stole the opportunity for someone to do the old "humming because it didn't know the words" quip...

    On a slightly more serious "note" (!), GFCIs have balance detecting transformers inside them, and its conceiveable (or maybe even likely) that there's the source of the humming, but I'd have thouight it would only occur under load, and given I've never heard one of these things hum, I'd wonder what sort of load could induce a balance transformer to make a racket...?

  5. #5
    Join Date
    Nov 2007
    Location
    massachusetts
    Posts
    3,166
    maybe its arcing from a loose connection
    "Most good electricians are pretty sure that they are the best and the great ones never stop trying to be."

  6. #6
    Join Date
    Oct 2006
    Location
    Jersey Shore
    Posts
    315
    Quote Originally Posted by dbuckley View Post
    I'm just disappointed that the OP stole the opportunity for someone to do the old "humming because it didn't know the words" quip...
    I am disappointed that I saw this thread and thought the exact same thing, then I became even more disappointed when I realized someone else beat me to pointing out how disappointed I was when I saw this thread and thought the exact same thing, then I became even more disappointed when I realized someone else beat me to pointing out how disappointed I was when I saw this thread and thought the exact same thing, then I became even more disappointed when I realized someone else beat me to pointing out how disappointed I was when I......whoa.......I have just invented a mobius post.
    Proud inventor of the left handed screwdriver.
    *patents pending

  7. #7
    Join Date
    Aug 2007
    Posts
    2,754
    I am merely dissapointed that the GFI did not know the words.

  8. #8
    Join Date
    May 2005
    Location
    Richmond, Virginia
    Posts
    21,838
    Quote Originally Posted by nakulak View Post
    I am merely dissapointed that the GFI did not know the words.
    What took you so long?
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  9. #9
    Quote Originally Posted by LarryFine View Post
    What took you so long?
    He could not find the words.

  10. #10
    Join Date
    Jun 2006
    Location
    NY, NY
    Posts
    257
    Never heard GFIs humming. Heard breakers humming under a load.

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