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Thread: 12V vs. 120V Lighting

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    Join Date
    May 2011
    Location
    Coral Springs, FL (near Ft. Lauderdale)
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    92

    12V vs. 120V Lighting

    I am upgrading my pool and spa lights with Jandy WaterColors LED lights. My current lights are 12V. Any advantage/disadvantage to changing to 120V? I am controlling with iAquaLink if that changes the analysis.

    Thanks!
    15x30 inground concrete pool w/spa and spillover, all under screen enclosure
    Hayward C1200 StarClear Plus Cartridge Filter and Hayward Navigator V-Flex
    Jandy AquaPure 1400, Laars LX400 propane heater w/120 gal above-ground tank
    Jandy VS FloPro 2.7 HP Pump VSFHP270JEP; FlowVis FV-C Flow Meter
    Jandy iAquaLink and OneTouch controller w/PDA remotes; JVA for draining pool

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    bdavis466's Avatar
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    Riverside, CA
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    Re: 12V vs. 120V Lighting

    12V lights are slightly safer (not that 120V lights aren't) but are more susceptible to voltage drop over long wiring runs. Since you are already set up with 12V, why not stick with that? There really isn't a significant difference between the two.
    -Brian-
    33K Pool/Spa, Pentair Equipment
    POOL BUILD
    Davis Custom Construction - Home Page

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    Join Date
    May 2011
    Location
    Coral Springs, FL (near Ft. Lauderdale)
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    92

    Re: 12V vs. 120V Lighting

    Thanks. I just figured eliminating the transformer would eliminate one more point of failure. Cost difference between the two is negligible.
    15x30 inground concrete pool w/spa and spillover, all under screen enclosure
    Hayward C1200 StarClear Plus Cartridge Filter and Hayward Navigator V-Flex
    Jandy AquaPure 1400, Laars LX400 propane heater w/120 gal above-ground tank
    Jandy VS FloPro 2.7 HP Pump VSFHP270JEP; FlowVis FV-C Flow Meter
    Jandy iAquaLink and OneTouch controller w/PDA remotes; JVA for draining pool

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    bdavis466's Avatar
    Join Date
    Aug 2014
    Location
    Riverside, CA
    Posts
    3,284

    Re: 12V vs. 120V Lighting

    The transformers aren't all that prone to failure and if one does, an Intermatic PX300 (about as good as they get) can be had for well under $100.

    Switching out to line voltage lights would also require you to run a #8 bond wire from the niche to the pool junction box (if there already isn't one) which would be an added headache and difficult/ impossible with the niche underwater. A special purpose potting compound has to be applied to the bond lug in the niche which may or may not cure underwater. If the niches were designed for low voltage lights to begin with, they may not even have the bond lug inside anyway.

    I'd gladly change out a transformer any day....
    -Brian-
    33K Pool/Spa, Pentair Equipment
    POOL BUILD
    Davis Custom Construction - Home Page

  5. Back To Top    #5

    Join Date
    May 2011
    Location
    Coral Springs, FL (near Ft. Lauderdale)
    Posts
    92

    Re: 12V vs. 120V Lighting

    Thanks. That's very helpful.
    15x30 inground concrete pool w/spa and spillover, all under screen enclosure
    Hayward C1200 StarClear Plus Cartridge Filter and Hayward Navigator V-Flex
    Jandy AquaPure 1400, Laars LX400 propane heater w/120 gal above-ground tank
    Jandy VS FloPro 2.7 HP Pump VSFHP270JEP; FlowVis FV-C Flow Meter
    Jandy iAquaLink and OneTouch controller w/PDA remotes; JVA for draining pool

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