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Waterproof Exterior Junction Box

Skooterj

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Mar 11, 2021
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752
Location
Indiana
I am automating two deck fountains on my pool. I have a 4 channel Sonoff in the large gray box on the wall in the picture. One channel triggers a contactor for the pump, one channel turns on the light and the last two channels are going to activate 24 volt transformers that open the pictured US Solid, auto return, normally closed valves. I've got to rework some plumbing, but that I have a plan for. I was planning on running 18 gauge wires from the gray box to the switches through flexible conduit, but will need to do something about the splice for the pigtails on the valves. I was thinking about running the flexible conduit into a junction box and making the connections inside that, but was wondering about attaching it to the concrete slab, or strapping it to the pvc plumbing. Does anyone have a suggestion?
 

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mm08822

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Jan 13, 2012
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6,066
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NJ
Consider removing those short tails and replacing with 18-2 UV resistant cables long enough to reach the controller location. Leave a loop at the valve, follow the surface of the pipe and cable tie the cable on the most protected side of each pipe.

Measure the existing cable diameter and replace with same diameter so new cable fits into water tight strain relief.
 
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Skooterj

Well-known member
Joined
Mar 11, 2021
Messages
752
Location
Indiana
Consider removing those short tails and replacing with 18-2 UV resistant cables long enough to reach the controller location. Leave a loop at the valve, follow the surface of the pipe and cable tie the cable on the most protected side of each pipe.

Measure the existing cable diameter and replace with same diameter so new cable fits into water tight strain relief.
I was thinking about that. I think that would be the best solution, all the connections would be in the large junction box. But I am worried about opening the valves control casing. I assume the pigtail is soldered onto a board in the housing and I am not the best solderer.
 

larry4406

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Jan 27, 2006
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19,638
Location
Northern Virginia
I was thinking about that. I think that would be the best solution, all the connections would be in the large junction box. But I am worried about opening the valves control casing. I assume the pigtail is soldered onto a board in the housing and I am not the best solderer.
Open one and see if they are soldered. You will never know till you try.

If they are, then maybe there is room enough inside to make the splice.
 
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