Light Conduit Requirements - water tight?

C

coltrane5000

Member
Location
Fort Worth
Occupation
Pool Service Company
Hi,
I have a pool with water in the conduit going from the pool light to the control panel.

Could I get help finding the NEC code that defines if water can be in the conduit? I vaguely remember from my RAIL test - water tight vs. water proof.

Thanks,
Micky
 
Welcome to the forum.

The interior of all conduit outdoors is considered to be a wet location.

Thus, all wire outdoors must be wet-rated, in conduit or not.

Yes, water in outside conduit is acceptable since it's unavoidable.
 
LarryFine said:
Welcome to the forum.

The interior of all conduit outdoors is considered to be a wet location.

Thus, all wire outdoors must be wet-rated, in conduit or not.

Yes, water in outside conduit is acceptable since it's unavoidable.
Click to expand...
Thanks. That helps me narrow down the NEC code location.
 
coltrane5000 said:
Hi,
I have a pool with water in the conduit going from the pool light to the control panel.

Could I get help finding the NEC code that defines if water can be in the conduit? I vaguely remember from my RAIL test - water tight vs. water proof.

Thanks,
Micky
Click to expand...
It's a given the conduit will have water, or at least lots of moisture. That's why the NEC requires junction boxes be above the waterline, depending on the contact voltage of the light, and they type of light. Also, some JB require a potting compound be added to keep out water/moisture.

You won't find anything stating water is, or is not, allowed in the conduit. But you can infer that water will be there by what they state about the junction boxes minimum height, potting compound to keep the water out, etc.
 
How high is the pool box above the water level of the pool. It should not have water in it. I believe the box must be 8" or so above the pool high water level.
 
Here is the code section 2023



(2) Installation.
Where the luminaire operates over the low-voltage contact limit, the junction box location shall comply with 680.24(A)(2)(a) and (A)(2)(b). Where the luminaire operates at the low-voltage contact limit or less, the junction box location shall be permitted to comply with 680.24(A)(2)(c)⁠.
  • (a)
    Vertical Spacing. The junction box shall be located not less than 100 mm (4 in.), measured from the inside of the bottom of the box, above the ground level, or pool deck, or not less than 200 mm (8 in.) above the maximum pool water level, whichever provides the greater elevation.
  • (b)
    Horizontal Spacing. The junction box shall be located not less than 1.2 m (4 ft) from the inside wall of the pool, unless separated from the pool by a solid fence, wall, or other permanent barrier.
  • (c)
    Flush Deck Box. If used on a lighting system operating at the low-voltage contact limit or less, a flush deck box shall be permitted if both of the following conditions are met:
    • (1)
      Potting compound is used to fill the box to prevent the entrance of moisture.
    • (2)
      The flush deck box is located not less than 1.2 m (4 ft) from the inside wall of the pool.
Click to expand...
 
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