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Thread: Best way to route pool light conduit

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    Best way to route pool light conduit

    I have an 18 X 47 lazy L vinyl liner pool being installed now. I plan to order 2 pentair 12v LED lights and am trying to decide how long to order my whips. One will be short but the other I can't decide on how best to run the wiring. I have two niches installed on opposite sides of the pool more or less diagnonally opposite of each other. My question is at this point my installer just has 3/4" pvc "stubbed up" at each niche he recommended a junction box at each site which will be flush in my pool surround/concrete. Would it be preferable to run 1" pvc on the "long run" for the light that is on the opposite side of where my control/switch will be and keep the bends as large a radius as possible to facilitate pulling the whip thru them when the need arises. Also can I "home run" both conduits to the control box which is about 25' from the pool and avoid the junction boxes being in my slab/concrete surround. If so is it a problem pulling the whip all the way around a pool thru 1" pvc? Does using silicon lubricant take care of friction/sticking issues?

    Thanks for your help!

    Billy Alexander

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    Join Date
    Jun 2011
    Long Beach, CA

    Re: Best way to route pool light conduit

    My PB ran both of my lights all the way back to the pad as I did not have any good place to hide the junction boxes. I don't have any problems with running the cables to the pad and it is a nice clean look. My longest run is about 75'. I believe he used 1" pvc but it could be a tad larger. He applied heat on the pvc to make large bends everywhere. Using the lube is a good idea.
    16k gal plaster with raised spa, Jandy DEV60 filter, 2 HP 2-speed SHPF Jandy Stealth pump
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    Melt In The Sun's Avatar
    Join Date
    Oct 2009
    Tucson, AZ

    Re: Best way to route pool light conduit

    I don't think those in-deck junction boxes are allowed anymore...hopefully someone can confirm/deny that.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    In the Industry

    Join Date
    Nov 2011

    Re: Best way to route pool light conduit

    Junction boxes are still allowed possibly somewhat dependant on your local codes if any. The best thing is to terminate conduit from the niche as quickly as possible. The conduit has water from the pool in it so if by chance it should begin to leak it is tough tracking it down.
    Over 30 years in the pool business
    We build vinyl, fiberglass, stainless steel pools
    Certified in Hydraulics

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    Join Date
    May 2011
    Orange County, CA

    Re: Best way to route pool light conduit

    The junction boxes make replacement much easier. The friction rapidly builds up over long runs and can make replacement very difficult. As for lube, I've used conduit "wax" from HD that seems to help. But on a long conduit run, it did not help. So, I'd suggest keeping the junction boxes and using a wider "home run" line. You can keep each fixture circuit separate if you want individual control over them. Or you can tie them in to a single home-run line that goes back to the transformer near your power/control panel. I used the latter because I don't really care for the "light swim" effect. I prefer all the fixtures to be synchronized.
    38K in ground pool with attached spa. Current equipment: Easytouch 8 (521150) with IC-60 SWCG with web control by Autelis, 1x Pentair IntelliFlo 011018 pump (for filter), 1x Pentair 2HP WhisperFlo pump (for waterfall), 2X Pentair IntelliBrite 5G 12V lights, Pentair MiniMax400 NG Heater, Pentair SMBW2060 DE filter. Zodiac Barracuda MX8 cleaner on dedicated cleaner line. Lighting/home automation controlled by Insteon/ISY-99i.

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    phipsi1237's Avatar
    Join Date
    Jan 2011
    Tularosa, NM

    Re: Best way to route pool light conduit

    I would use separate runs all the way to the junction box at the pad. It'll be heck to replace a single light down the road pulling wire with wire already there. Lighting wire is pretty thick. Not sure you'll be able to pull 2 through a single 1" line.

    My pool and spa lights are intellibrites and synchronize fine wired to separate relays inside the EasyTouch. (Installer said they wouldn't synchronize unless on the same relay, he was wrong)
    14.5K gal Plaster IGP, Intelliflo VS, EasyTouch 8, SWG, IntellipH, Clear and Clean 420 Cartridge Filter, Attached Spa, H400IDL2 NG Heater

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    Re: Best way to route pool light conduit

    Quote Originally Posted by Melt In The Sun
    I don't think those in-deck junction boxes are allowed anymore...hopefully someone can confirm/deny that.
    Specific listed pool junction boxes with cable clamps and ground screws are required in the national electric code, but not all jurisdictions have adopted it. I'm not sure what the IBC requires.
    8.5k gallon IG pebble sheen play pool with Intellitouch control, Intellifo VF, IC 20, Rainbow tab feeder (not currently in use), Pentaire mystery cartridge filter with labels faded to the point I have no idea on the model, Intellibrite 5g LED light, Hayward Navigator. Adding IntelliPh and Crestron control next.

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