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Old 02-09-2010, 10:03 PM   #1
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Proper method for well pump wires coming through wall


In my 1940's basement I have a well line coming through the wall with the power for the well pump.

I am planning on relocating the well tank, so I will need to extend the wiring to the new well tank location.

The existing hole has 1" pvc water line and 2 10gauge wires (220v for the well pump)

Is there a proper method for this?

Otherwise I bought a gray PVC sealed electrical box. I was going to drill a hole in the back and the wires into splice it.
Then up through a new plastic pipe to the ceiling to run over to the new location.

I also need a standard method to attach this to my well switch - now it is just loose wires.

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Old 02-09-2010, 10:33 PM   #2
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Proper method for well pump wires coming through wall


This is the type of box I bought.
Since I have to run 10gauge up and down the pipe, I bought 1" size.
Not sure if could go smaller or not.


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Old 02-10-2010, 11:32 AM   #3
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Proper method for well pump wires coming through wall


I find these boxes to be the best for your application. You can get them in many varieties. As you can see it already has a threaded opening in the back for any cable or conduit connector. Just make sure you get a weatherproof cover with gasket (they come together).
Try to never use the top opening if you can help it. Heres a picture of the box.

I included a picture of a male conduit adapter. This will screw into the box and except a conduit. Included with the box are threaded blanks to fill any unused openings.
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Old 02-10-2010, 11:10 PM   #4
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Proper method for well pump wires coming through wall


I saw those also.
I think I will get that same box.

What is the problem with using the top opening?
Thats what I plan on doing.

Does it make sense to use 1" conduit for the 10gauge romex I need to run.
2 runs in a 1" pipe.
I think 3/4" would be too tight
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