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Thread: Pool Light / transformer question..

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    Pool Light / transformer question..

    Pool light isn't working.. I figured it might be the switch got wet and quit working. So last night in between rains, I ran outside and used the voltmeter on my switch. when I turn it on, i get that the signal is hot on both sides of the switch. This makes me think the transformer is to blame.

    Its a 120v to 12v DC c. transformer. Do you guys think I can buy one of the Home Depot transformers for outdoor lights, or do I need a special kind?

    Hampton Bay 12-Volt Low-Voltage 200-Watt Transformer-HD22772 - The Home Depot

    would this work? I consulted w/ a home depot employee he said an outdoor light transformer would work he thinks. Thanks for the electrical help
    16x32 27k gal oval gunite pool, 24-inch Hayward sand filter, 1HP pump

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    Re: Pool Light / transformer question..

    As long as your bulb is less than 200W. Having said that, i cannot tell you if the Hampton Bay fan X former can handle being in a electrical box outdoors (humidity, etc.).
    Is the one that should be used much more expensive?
    Factory Warranty Station for:
    Jandy/Zodiac, Pentair, Sta-Rite, Raypak, Polaris,
    and Paramount pool cleaning systems.

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    Re: Pool Light / transformer question..

    would probably work as long as the wattage/amperage supported isn't too low. What kind of light do you have? I noticed that my led pool lights are actually 12v AC, not DC, which was a surprise to me...
    17.4k gallon IG pool with attached spa (spa itself is 730gal), Super Blue Diamondbrite plaster, Circupool SI-45+ SWG, BH/Hayward Cartridge Filter, 2hp 2speed Hayward Super II pump, , Jandy Valves, Waterway Skimmers, Rheem 400k Heater, Polaris 360 cleaner, built 2000+-, replastered June 2015, TF-100 kit---Here's my pool test reading history

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    Re: Pool Light / transformer question..

    I don't know the wattage of the light it's been a little while since I checked. Here is what I bought:

    ProLED BR40 Pool Light Bulb
    Pool Light Bulb, Pro LED BR40 | Pinch A Penny Store

    From Pinch a penny. Weird, it doesn't show the watts.

    - - - Updated - - -

    Quote Originally Posted by Pool Clown View Post
    As long as your bulb is less than 200W. Having said that, i cannot tell you if the Hampton Bay fan X former can handle being in a electrical box outdoors (humidity, etc.).
    Is the one that should be used much more expensive?
    The one that should be used is around 100-120 dollars. So this one is much cheaper. I was just wondering were most of the transformers universal, as long as it takes my 120v and turns it to 12v. I guess any would work as long as I'm getting enough watts to power the light?
    16x32 27k gal oval gunite pool, 24-inch Hayward sand filter, 1HP pump

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    Re: Pool Light / transformer question..

    OK called pinch a penny they looked it up. it's a 300 wat 12v light. soo the 200 wat will not work. Guess I need a 300w 12v transformer then. The transformer at pinch a penny is 110 dollars.
    16x32 27k gal oval gunite pool, 24-inch Hayward sand filter, 1HP pump

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    TFP Guide

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    Re: Pool Light / transformer question..

    Use the volt meter to check the low volt side of the transformer as well as the high voltage side and see what voltages you have there
    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: Pool Light / transformer question..

    How many pool lights are you running off of that transformer? There is no way that a LED pool light can consume 300 Watts. Pinch a penny probably saw that the bulb was a 300 Watt equivalent and told you it took 300 Watts to run it. 50 Watts or less is typical for a LED pool light. As far as trouble shooting the current transformer, open up the junction box that the light is connected to and measure the voltage there. Also check that the connections are good. Wire nuts can sometimes loosen up due to thermal contraction and expansion.
    38000 Gal, IG, Plaster, 20' x 40' x 10', Attached Raised Spa, Intelliflo VS 3 HP (011018), Pentair Quad DE 60 Filter, Raypak (Rheem) 400,000 BTU (407a low Nox), Easy Touch 8 upgrade, Screenlogic 2 with wireless, IS-4 Spa Side Remote, Stenner 45MPHP10 w/15 gal tank, Intellibrite 5g (3), Dolphin Triton Plus robot with PRO remote, Water Tech Catfish handheld vacuum for spa, TF100 with SpeedStir.

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    Re: Pool Light / transformer question..

    Quote Originally Posted by gary300 View Post
    How many pool lights are you running off of that transformer? There is no way that a LED pool light can consume 300 Watts. Pinch a penny probably saw that the bulb was a 300 Watt equivalent and told you it took 300 Watts to run it. 50 Watts or less is typical for a LED pool light. As far as trouble shooting the current transformer, open up the junction box that the light is connected to and measure the voltage there. Also check that the connections are good. Wire nuts can sometimes loosen up due to thermal contraction and expansion.
    The link I posted is incorrect, it's not a LED.. it's a normal pool light. Similar to this one:
    http://www.amazon.com/Hayward-SPX054...att+pool+light


    It is just 1 light that goes in the side. I'll open up the junction box today and see where I get with it today. Thank you!
    16x32 27k gal oval gunite pool, 24-inch Hayward sand filter, 1HP pump

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    Re: Pool Light / transformer question..

    If you wanted to, you could replace it with something like this, which consumes far less wattage and then you could use the smaller transformer...

    Amazon.com : 252 LED 12 Volt Color Changing Replacement Swimming Pool Light Bulb : Swimming Pool Lighting Products : Patio, Lawn Garden
    17.4k gallon IG pool with attached spa (spa itself is 730gal), Super Blue Diamondbrite plaster, Circupool SI-45+ SWG, BH/Hayward Cartridge Filter, 2hp 2speed Hayward Super II pump, , Jandy Valves, Waterway Skimmers, Rheem 400k Heater, Polaris 360 cleaner, built 2000+-, replastered June 2015, TF-100 kit---Here's my pool test reading history

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    Re: Pool Light / transformer question..

    Quote Originally Posted by gilbee View Post
    If you wanted to, you could replace it with something like this, which consumes far less wattage and then you could use the smaller transformer...

    Amazon.com : 252 LED 12 Volt Color Changing Replacement Swimming Pool Light Bulb : Swimming Pool Lighting Products : Patio, Lawn Garden
    Good call, I have been wanting to get a color changing bulb. Didn't get a chance to tear open the transformer this weekend between family plans and the ridiculous amount of rain.
    16x32 27k gal oval gunite pool, 24-inch Hayward sand filter, 1HP pump

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    Re: Pool Light / transformer question..

    I'd be very cautious about using a transformer not specifically called out for pool lights -- I don't know what NEC rules apply, but a badly designed transformer could fail in a way that shorts the primary to the secondary, allowing 120V through to the pool. I don't know what, if any, safety features that dedicated pool light transformers have to address this.
    21000gal IG plaster, Sacramento CA area (late 1950s/early 60s)
    Filter: Cartridge, Pentair CCP420 (2014)
    Main pump: Pentair IntelliFlo VS (2015)
    Boost pump: 3/4hp (2011), Polaris 280 cleaner (unknown age)

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