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    shaza's Avatar
    shaza Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Oct 30, 2005, 12:13 PM
    Electric showers
    My old shower broke it was a 7.5kw,can I buy a 8.5kw or higher and connect it to the plumbig/electrical supply already in place? Could someone tell me what kw means,is it electric or pressure term. :confused:
    shaza's Avatar
    shaza Posts: 2, Reputation: 1
    New Member
    		  
    #2

    Oct 30, 2005, 12:17 PM
    [QUOTE=shaza]my old shower broke it was a 7.5kw,can I buy a 8.5kw or higher and connect it to the plumbig/electrical supply already in place? Could someone tell me what kw means,is it electric or pressure term. :confused:if someone could answer my question I would then be able to do the job myself
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #3

    Oct 30, 2005, 12:40 PM
    One KW Kilowatt equals 1000 watts

    Assuming USA codes and 240 volts-

    7.5KW @ 240 volts= 31.25 amps
    8.5KW @ 240 volts= 35.41 amps

    The 7.5 KW unit should have at least #8 AWG wire feeding it.
    The 8.5KW unit rises the amperage above the limit for #8 wire, and must be wired with #6 AWG wire.

    Get back with more details of the existing installation and conditions and we can help further.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #4

    Nov 5, 2005, 08:25 AM
    Listen toTKRussel, he's the resident electrical expert and he's sharp.
    As a plumber I can see no problems with changing over the shower valve supply wise. Good luck, Tom
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