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    andredev's Avatar
    andredev Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jan 1, 2008, 01:01 PM
    Breaker triping
    I have just installed a heat pump to my indoor swimming pool however after running fine for the first two months, the breaker has begun to trip at any given time.

    The heat pump is a 5.5kw 220volts 25amps which I wired with 4mm three way wiring (neutral, live & earth). I have installed a 20amp 6ka hy mag breaker(orange flip switch) to the mains board of the house.
    The way I have explained the installation was given to me by the suppliers of the heat pump & they in turn are lost for words, please help as I am not sure what I did wrong.

    Regards

    Andredev
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Jan 1, 2008, 01:33 PM
    So you installed a 20 amp breaker for a 25 amp pump?
    smearcase's Avatar
    smearcase Posts: 2,392, Reputation: 316
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    #3

    Jan 1, 2008, 01:43 PM
    Neutral, live and earth for 220V?
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
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    #4

    Jan 1, 2008, 02:30 PM
    andredev didn't favor us with his location, but that is how they do things on the East side of the Atlantic.

    I don't have a table for 4 mm wire, but it is larger than our #8, usually good for 40 amps if copper. Check the rating for the 4 mm and type of cable you used. If it is OK, try a heavier breaker.
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