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Sensor Lights

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  • 30-08-2009 8:16pm
    #1
    MAYOMICK
    Registered Users Posts: 205 ✭✭


    I have a 150 w Halogen Sensor Light.Can I wire another similar light to this (No Sensor)and run the two lights off the one Sensor.


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    #2
    mazthespark
    Registered Users Posts: 630 ✭✭✭mazthespark


    ya as long as the sensor is able to switch the 2 lights. the rating of the sensor mitent be high enough. if its not you could just buy an independant sensor and switch both through that. if u want to try use the one u already have make sure u connect to the cable goin to the light if it even has a connection in the fitting mitent be accessible


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    #3
    Stoner
    Moderators, Home & Garden Moderators, Technology & Internet Moderators Posts: 10,952 Mod ✭✭✭✭Stoner


    as above, you could also drop the wattage of the lamps to meet the rating of the sensor, it cold be a 500W light that you are using with a 150W lamp, in that case you would be fine and there is nothing wrong with it.


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    #4
    KoolKid
    Moderators, Home & Garden Moderators, Technology & Internet Moderators Posts: 24,789 Mod ✭✭✭✭KoolKid


    There are now CFL bulbs to replace halogen bulbs.
    They will reduce the rating nicely for you.


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    #5
    davelerave
    Closed Accounts Posts: 1,712 ✭✭✭davelerave


    koolkid wrote: »
    There are now CFL bulbs to replace halogen bulbs.
    They will reduce the rating nicely for you.

    cfl not generally compatible with pirs.


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    #6
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,565 Mod ✭✭✭✭2011


    cfl not generally compatible with pirs.
    Why?
    I cant see why the CFL would "see" a pir as any different to any other switch.


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    #7
    davelerave
    Closed Accounts Posts: 1,712 ✭✭✭davelerave


    2011 wrote: »
    Why?
    I cant see why the CFL would "see" a pir as any different to any other switch.

    maybe.what about warm-up time and frequent switching with pirs?Cold weather outdoors will also increase warm-up time.Led should work well with pir(quick warm-up and suitable for frequent switching afaik)


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    #8
    KoolKid
    Moderators, Home & Garden Moderators, Technology & Internet Moderators Posts: 24,789 Mod ✭✭✭✭KoolKid


    I,ve replaced them for people. They work fine.
    The future is LED anyway.


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    #9
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,565 Mod ✭✭✭✭2011


    Switching is not necessarily more frequent just because it is on a PIR. Warm up time will remain unchanged regardless of the switch type.


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    #10
    davelerave
    Closed Accounts Posts: 1,712 ✭✭✭davelerave


    http://www.scldirect.co.uk/replacement-lamps/energy-saving-lamps/energy-saving-floodlight-lamps/linear-halogen-retrofit-energy-saving-lamp.html

    they seem to be suitable for pir alright-fast start


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    #11
    davelerave
    Closed Accounts Posts: 1,712 ✭✭✭davelerave


    2011 wrote: »
    Switching is not necessarily more frequent just because it is on a PIR. Warm up time will remain unchanged regardless of the switch type.

    i should have said 'short-on time' rather than 'frequent switching'.can affect cfl bulb-life


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    #12
    KoolKid
    Moderators, Home & Garden Moderators, Technology & Internet Moderators Posts: 24,789 Mod ✭✭✭✭KoolKid


    Not really an Issue. We use them on Lamps with regular X10 switching.


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    #13
    2011
    Moderators, Home & Garden Moderators, Technology & Internet Moderators, Regional East Moderators Posts: 12,565 Mod ✭✭✭✭2011


    Frequent switching or "short-on time" switching will not just shorten the life of CFLs, but also the lamps that come with sensor lights (often halogens).

    There is an increasing trend to use PIRs/prenence detectors and daylight type sensors to control lights instead of the traditional light switches to reduce energy costs.

    Such "intelligent" systems switch many different lamp types including CFLs, incandesent etc.


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