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Thread: Upgrading to LED light, power question

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    Upgrading to LED light, power question

    I just ordered a pentair color changing LED light to replace the old regular light in the pool that has tripped the gfi since we moved in. The bulb I removed from the current fixture while troubleshooting is 120V and 500w. Will I need to buy a transformer for the new 12V LED light, or is the transformer built in? When I ordered it I pictured just pulling the new wires, splicing it in, and I'd be good to go. Now I'm thinking there's a bit I may have overlooked, not to mention more equipment to purchase! Thanks!
    In ground 12,000 gallon gunite pool with attached spa, sand filter, nautilus pro robot, and of course my TF-100 test kit.

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    Re: Upgrading to LED light, power question

    Looks like I got a little too excited when the wife gave me the thumbs up to buy a new light. I failed to notice that some models were 12V and others were 120V. My next question is whether or not there's any benefit/reason to buy a transformer and install the 12V light, versus return it and order the correct 120V one?

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    Re: Upgrading to LED light, power question

    The 120 is probably going to be brighter -- however your experience may be different.
    22k gallon IG pebblefina, Jandy 1.5 HP VS, Jandy CV Cartridge filter, Fafco solar panels, Polaris 360 supply side cleaner, waterfall

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    Re: Upgrading to LED light, power question

    Quote Originally Posted by Smitty24 View Post
    Looks like I got a little too excited when the wife gave me the thumbs up to buy a new light. I failed to notice that some models were 12V and others were 120V. My next question is whether or not there's any benefit/reason to buy a transformer and install the 12V light, versus return it and order the correct 120V one?
    Benefit could be safety, though some will say otherwise. Personally I chose the 12v because I like the comfort of knowing I have less voltage in our water. I spoke to pentair who assured me there was no difference in color or brightness, though there's varying opinions on that.

    Depending on the length of run and number of lights, you can get an intermatic px100 or px300. They're not too bad on price and pretty easy to wire up.
    13K Gallon IG Pool/Spa -- First time pool owners -- Completed in 2015 Caribbean Blue Pebble Tec Pentair 4000 Series 47 sq. ft. D.E. Filter Pentair IntelliFlo Variable Speed Pump Pentair SWG Jandy LXi Heater 400,000 BTU S.R. Smith Typhoon Slide Pentair LED 12v Lights Dolphin Nautilus Robotic Cleaner TF-100 Test Kit
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    Re: Upgrading to LED light, power question

    Since there are no LED's ( the diodes themselves) that operate on 120 volts I would suspect that the 120 volt unit will have some sort of voltage limiting device in the light housing itself. In fact depending on how many LED's are in the 12 volt unit I would assume there is a voltage limiting device in there as well. Most diodes are set up to run on 1.5 volts. There are some newer ones that will run on a slightly higher voltage.
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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    Re: Upgrading to LED light, power question

    I went ahead and returned the 12V and ordered the 120V. The 12V would require a transformer, about a $100. The 120V light is right at $100 more than the 12V, so I'm assuming they basically just use a built in transformer, thus the price difference. This way I don't have to do any re-wiring, just pull the new power cord and hook it up. Thanks!
    In ground 12,000 gallon gunite pool with attached spa, sand filter, nautilus pro robot, and of course my TF-100 test kit.

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