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Thread: GFCI Breaker for Pool Lights

  1. #1
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    GFCI Breaker for Pool Lights

    Does the NEC 2017 require a gfci circuit breaker to be used to feed pool lighting circuit if the lighting system in using a NSI Industries TPX300 pool light transformer?

    The TPX300 is a step down transformer 120 primary / 14 v secondary.

    680.23 (A) 3. Says GFCI breakers to be used branch circuits supplying luminaires operating at a voltage greater than the low-voltage contact limit.

    Looking at the situation from the primary side one would say YES to the GFCI
    Looking it from the secondary side one would say NO.

    Advise

    Thanks

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    The primary side needs gfci protect however I have never seen gfci protection on the secondary side. We also gfci the line and that's all one can do.

    BTw, welcome to the forum
    They say I shot a man named Gray and took his wife to Italy
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    I have never seen a GFCI made for LV. Further, because the LV secondary is prohibited from being grounded (IE it's floating), if it should fault to something there would be no risk.

    -Hal

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    Quote Originally Posted by Dennis Alwon View Post
    The primary side needs gfci protect however I have never seen gfci protection on the secondary side. We also gfci the line and that's all one can do.

    BTw, welcome to the forum
    Does it ? The LV limit referred to in the article is 50v I believe; If you have less than that going to the shell of the pool I don’t believe a GFCI is required.


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    Quote Originally Posted by hbiss View Post
    I have never seen a GFCI made for LV. Further, because the LV secondary is prohibited from being grounded (IE it's floating), if it should fault to something there would be no risk.

    -Hal
    interesting, was the intent on purpose?....~RJ~

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    Good question because it doesn't only apply to pool LV wiring.

    -Hal

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    Quote Originally Posted by hbiss View Post
    Good question because it doesn't only apply to pool LV wiring.

    -Hal
    hmmmm. well i have some thoughts on that, but would like to ask what yours are first Hal

    ~RJ~

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    Only think I can think of is minimizing the shock hazard. 48V can give you a good tingle.

    -Hal

  9. #9
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    I'm imagining a step potential applies for water, along with those immersed in it

    that said the older industrial ungrounded deltas w/impedance shunts (230.82-4) comes to mind

    one leg to ground was no thing....

    ~S~

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