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Noisy ESB MCB?

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  • 14-10-2006 6:01pm
    #1
    Eurorunner
    Closed Accounts Posts: 2,393 ✭✭✭


    I have noticed the MCB has a loud humming noise coming from it from time to time. latest example this morning when hardly any demand for power. Its a new house.

    Is this normal?


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    #2
    Copper
    Registered Users Posts: 68 ✭✭Copper


    Do you mean the humming is coming from your fuseboard, or the ESB meter, or the ESB fuses?

    Sometimes the bell transformer hums intermittently. Next time it starts humming see exactly where its coming from. The bell transformer will have a bell symbol and something like 12V-8V-0V written on it.


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    #3
    Eurorunner
    Closed Accounts Posts: 2,393 ✭✭✭Eurorunner


    Copper wrote:
    Do you mean the humming is coming from your fuseboard, or the ESB meter, or the ESB fuses?
    fuses/fuseboard.
    Copper wrote:
    Sometimes the bell transformer hums intermittently. Next time it starts humming see exactly where its coming from. The bell transformer will have a bell symbol and something like 12V-8V-0V written on it.
    Ok, will do. Thanks for that.


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    #4
    NUTLEY BOY
    Registered Users Posts: 2,344 ✭✭✭NUTLEY BOY


    A bad or loose connection causing arcing perhaps ?


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    #5
    rogue-entity
    Registered Users Posts: 1,656 ✭✭✭rogue-entity


    If it was an arc caused by a bad connection it would sound much sharper, like a tazer. Occasionally there is a humming sound from our fuse cupboad, in our case it is coming from the meter and it just starts regardless to the demand on power. I would tend to agree that the noise is likly the bell transformer.


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