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Thread: Wet niche

  1. #11
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    Quote Originally Posted by Dennis Alwon View Post
    So if everything is plastic why is there a need for a lug.
    Not pool light, but I think I remember lug on plastic pump housing? And the reason was so bonding wire would be present if pump was ever changed to one with metal housing?
    Dave Ruth

  2. #12
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    Thanks for all replies. On rereading Wet-Niche I see where Luminaire bonding says " Bonding shall not be required for luminaries that listed for the application and have no non-current metal parts. But doesn't counter what Atricle 680.23(B)(2) says about that the bonding conductor serves as a path for ground-fault current.
    gusco

  3. #13
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    Quote Originally Posted by readydave8 View Post
    Not pool light, but I think I remember lug on plastic pump housing? And the reason was so bonding wire would be present if pump was ever changed to one with metal housing?
    Yeah but that pool shell is not going to be changed without major demolition of the pool
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



  4. #14
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    Quote Originally Posted by Dennis Alwon View Post
    So if everything is plastic why is there a need for a lug. Sounds like they introduced metal-- my guess is that it is for the screws that hold the light fixture in place

    You are exactly correct. It's to bond the light fixture itself with the mounting screw. The light fixture's body is stainless. Some have plastic trim face and some are chrome plated and stainless.

    I'm pretty certain stainless steel niches are still available. There's a lot of them out there.

  5. #15
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    Quote Originally Posted by Dennis Alwon View Post
    So if everything is plastic why is there a need for a lug. Sounds like they introduced metal-- my guess is that it is for the screws that hold the light fixture in place





    The "Metal Strap" and "Metal Trim Ring" inside the wet niche also establish the required water bond I believe...

  6. #16
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    Quote Originally Posted by shortcircuit2 View Post





    The "Metal Strap" and "Metal Trim Ring" inside the wet niche also establish the required water bond I believe...
    That's a great detail. That's it exactly. Yes, the metal strap and the metal trim when joined with the screw, provide the bond. I guess I'm surprised the detail does not show potting compound to be applied to the lug inside the niche.

    FYI: There is a product out there that has been around for sometime called the Light Wedge. Some niches tabs where the light fixture screws in, break off. Not really sure why-perhaps chemical damage. Anyway, this Light Wedge allows the light fixture to be secured inside the niche to prevent it from falling out by wedging itself in place. Problem is, it does not bond the light fixture. That's bad.

    You can google it or see it on Amazon.

  7. #17
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    I just assumed everything on the light was plastic. Plastic niche, plastic light and plastic screws or some other means to attach the light. We don't do the wiring inside the pool as the pool companies have licenses for that specifically so I don't get to see the lights in the pool.

    Thanks for the education and a great detail drawing of the light fixture and niche
    They say I shot a man named Gray and took his wife to Italy
    She inherited a million bucks and when she died it came to me
    I can't help it if I'm lucky



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