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Thread: Earth Leakage Confusion

  1. #1
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    Earth Leakage Confusion

    I have recently heard many conflicting opinions which electrical circuits MUST, MAY and MAY NOT be routed through an Earth Leakage (RCB).

    Can someone please give me a definitive must/may/may not answer for each of the following:

    Lights (ceiling mounted)
    Lights (perimeter wall)
    Normal 3-point plugs (non-dedicated)
    Geyser
    Stove
    Pool Pump
    UPS
    Garage door opener
    Gate motor

    If all of the above is must/may, is it allowable to use a earth leakage with overcurrent protection (RCCB) as a Main Switch?

    Thanks

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    lights : may
    plugs non ded. : must
    geyser : may
    stove : may
    pool pump : must
    ups : may
    garage door opener plug: must
    gate motor: may (if not plugged in)
    you may use an earth leakage with over current as a main switch

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    AndyD (09-Nov-15), ursi (09-Nov-15)

  4. #3
    Diamond Member AndyD's Avatar
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    You may use an earth leakage with overload is a main breaker or you can use a 30mA earth leakage without overload and a separate MCB but it's worth discussing the inconvenience factor with the home owner first. I generally avoid this setup if possible, I install a 100mA earth leakage as a main breaker and use 30mA 2-pole RCBO's for socket circuits which gives discrimination and a lot less headaches. A lot of it also depends on the type of premises and the budget available.
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  5. Thanks given for this post:

    ursi (10-Nov-15)

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