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  1. #1

    Humming noise from electrical wire

    Hello everyone.

    I have a carrier heat pump with auxiliary heat coil rated at 15kw.
    Model # is KFCEH1501F15

    When the heat is turned on (that mean all electric and no thermopump)
    there is a humming noise coming from the electric wire outside the house.
    The main wires are tied to the wall of my house and when inside I can clearly
    ear the noise and some vibration to the wall.

    The noise is not coming from the unit itself. It's really from the main power wires.

    I know that 15kw is a lot of power but why I ear that and can I do something
    to avoid that?

    I have a 200 amp main circuit panel.

    Thanks for any input of what I should do!

  2. #2
    Join Date
    Dec 2008
    Location
    Buffalo NY
    Posts
    3,107
    Call the power company or an electrician.


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  3. #3
    Join Date
    Jul 2006
    Location
    Virginia
    Posts
    4,665
    humming wires could mean you have something thats shorted to ground that should not be and could be dangerous ,call you hvac service provider asap
    We really need change now

  4. #4
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,744
    what they said^^^

  5. #5
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    15kw is definitely a lot of power. It's sometimes spread across 2 circuits to keep a single breaker under 60Amps. More ower means bigger potential boom is you have a a bigger arc flash from something going to ground suddenly. Defnitely get it checked out. Could even be an issue with the pwoer companies equipment at the pole.

  6. #6
    Join Date
    Aug 2012
    Posts
    2,663
    Me scared of huming wires.
    My name is TooCoolforschool and I am a chronic over charger.

  7. #7
    Join Date
    Aug 2003
    Location
    Fort Worth, TX
    Posts
    11,347
    Is your main circuit panel mounted on the same wall where you hear the electric hum? The hum could be in the panel itself, and is telegraphing the sound out from there. Regardless, get the power company and a licensed electrician involved. Better safe than burned out house.
    • Electricity makes refrigeration happen.
    • Refrigeration makes the HVAC psychrometric process happen.
    • HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.


    A building is NOT beautiful unless it is also comfortable.

  8. #8
    Join Date
    Jul 2000
    Location
    Northern Wisconsin
    Posts
    2,013
    I personally can't think of a single instance where humming wires, of any kind, are a good thing.

    Start by calling the power company and explain to them what you are hearing and where. They will either come out and investigate or tell you that because of where the noise seems to be coming from you need to call an electrician. Either way, you should get it checked out.
    Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.

  9. #9
    Quote Originally Posted by motoguy128 View Post
    15kw is definitely a lot of power. It's sometimes spread across 2 circuits to keep a single breaker under 60Amps. More ower means bigger potential boom is you have a a bigger arc flash from something going to ground suddenly. Defnitely get it checked out. Could even be an issue with the pwoer companies equipment at the pole.
    Well the eater is on a 100amp breaker circuit and the thermopump is on another smaller circuit.

    When the eat is on, even the meter outside do some noise.

    But thanks all, I didn't know it could be dangerous, I will call the power company first and see from there what they think.

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