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Thread: Pool light grounding wire nicked

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    Join Date
    Apr 2014
    United States

    Pool light grounding wire nicked

    As I was changing out an old, leaking pool light we ran into some problems requiring brute force. Unfortunately, the plastic coating on the grounding wire attached to the light niche with potting compound got nicked in the process in 2-3 places. Can I apply a waterproof sealant (I was thinking of using G-flex) over the nicks or do I need to replace the entire grounding wire and potting compound?

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    In the Industry
    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Pool light grounding wire nicked

    The good electricians will be along soon but I think the grounding wire can be nicked or exposed without harm.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

  3. Back To Top    #3

    Join Date
    Apr 2013
    Sacramento, CA

    Re: Pool light grounding wire nicked

    Technically that is a bonding wire NEC 680.23 (B)(2)(b). A "bonding jumper" in the words of the code. The purpose of the potting compound and insulation here is to protect the copper line from the deteriorating effect of the water. So whatever you can do. This is not major critical because the water is already bonded.

    If you are replacing the fixture I would replace the wire. If you do replace it its not normal wire its #8 considerably thicker than normal. And I would get stranded. Where I live the inspectors are very picky about the potting compound. Sacramento County actually requires that they leave the empty container in the niche so the inspector can tell what was used. So you would need to get that at an electrical supply house, I know they don't sell it at HD.
    22k gallon IG pebblefina, Jandy 1.5 HP VS, Jandy CV Cartridge filter, Heliocol solar panels, Polaris 360 supply side cleaner, waterfall

  4. Back To Top    #4

    Join Date
    Jun 2012
    western NY

    Re: Pool light grounding wire nicked

    Are the nicks all the way thru to the copper? I am assuming so. A lot of this depends on where in the conduit the nicks will be. If they will be in the wet portion I would definitely change the wire as any corrosion from the pool water will eventually compromise the wire. At very least, I would get a pool rated potting compound to protect the damaged area and then cover it with heat shrink tubing. Of course this may make it hard to pull back into the conduit.
    Unknown make 18' above ground (bought used in 1999) Sparco sand filter. Hayward 100,000 BTu heater. 2 speed pump

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