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Timer for Lights

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  • 10-05-2013 1:29pm
    #1
    JOHNPT
    Closed Accounts Posts: 517 ✭✭✭


    I have an indoor light switch switching outdoor light. Owner wants outdoor lights on a timer but no neutral at switch to power a timer. - he wants light on at night - dosent want a photocell
    There is an indoor socket close to switch - can i install fused spur & bring a L & N to switch position to power a timer and still use L feed to outdoor light to switch lights On/Off.
    Will the above trip the ELCB & is it allowed.
    Any suggestions


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    #2
    Dardania
    Registered Users Posts: 3,612 ✭✭✭Dardania


    will the timer be an isolation device between the circuits i.e. like on a boiler controller? If so, should work.


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    #3
    meercat
    Registered Users Posts: 4,745 ✭✭✭meercat


    No you shouldn't do this

    Most likely the light neutral will not be on the rcd so it will trip

    Simplest option is to install new light completely and operate this on the timer


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    #4
    mikehammer67
    Closed Accounts Posts: 699 ✭✭✭mikehammer67


    some of the mechanical timers have a separate switching contact so you could work it without tripping rcd

    you'd have 2 ccts in the same enclosure-it's permissible if clearly marked

    but i don't like it myself on dom work anyhow


    i wouldn't bother with that solution anyhow myself


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    #5
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,593 Mod ✭✭✭✭2011


    Dardania wrote: »
    will the timer be an isolation device between the circuits i.e. like on a boiler controller? If so, should work.

    Yes, if the time clock switches a dry contact it would work.

    I share Mikehammer's concern; electrically isolating the supply to the time clock alone will not result the unit being isolated. There would still be 230VAC present from the lighting circuit.


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