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Conduit Pass Through Question

 
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billhuntersemail(at)gmail
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PostPosted: Fri Jun 01, 2018 3:31 pm    Post subject: Conduit Pass Through Question Reply with quote

Dear Knower Of All Things That Dewlleth Within My Computer,

I am installing an evaporative cooler in my steel building hangar because it is getting kinda toasty here in Western Arizona…but hey…It’s a dry heat?!?!/

So I am running ˝ inch steel conduit for the 220V wire and ˝ inch PVC for the water line and I need to get these two aforementioned pipes from the inside of the hangar to the outside where the new totally cool evaporative cooler is being installed.

For those who have done this kind of work before, can you PLEASE direct me to a bushing that can be inserted into the sheet metal steel wall and then I can slide the conduits through that bushing…OR…if there is a better way then I would be happy to hear it. 

I have researched The Google to no avail…it did have hundred dollar firewall pass through units but no such economical bushings.

..

Cheers!!!

Bill  Hunter


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PostPosted: Fri Jun 01, 2018 4:24 pm    Post subject: Conduit Pass Through Question Reply with quote

On 6/1/2018 6:30 PM, William Hunter wrote:

Quote:
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Dear Knower Of All Things That Dewlleth Within My Computer,
 
I am installing an evaporative cooler in my steel building hangar because it is getting kinda toasty here in Western Arizona…but hey…It’s a dry heat?!?!/
 
So I am running ˝ inch steel conduit for the 220V wire and ˝ inch PVC for the water line and I need to get these two aforementioned pipes from the inside of the hangar to the outside where the new totally cool evaporative cooler is being installed.
 
For those who have done this kind of work before, can you PLEASE direct me to a bushing that can be inserted into the sheet metal steel wall and then I can slide the conduits through that bushing…OR…if there is a better way then I would be happy to hear it. 
 
I have researched The Google to no avail…it did have hundred dollar firewall pass through units but no such economical bushings.
 
..
 
Cheers!!!
 
Bill  Hunter
 
 


Well first, I wouldn't use steel conduit; I'd use PVC electrical conduit (the gray stuff). Won't rust & doesn't UV degrade. Much easier to work with, unless you have all the required electrician's tools.

For the electrical pass-through, 'LB' conduit fittings are one common way to do it.
https://www.google.com/search?q=lb+conduit+fitting&oq=lb+conduit+fitting&aqs=chrome..69i57j0l5.12062j0j7&sourceid=chrome&ie=UTF-8

If you feel you must have a  watertight seal, you can caulk around the hole in the siding.

For water, I'd just have to guess. How about something like this?
https://www.amazon.com/Cable-eLander-Plastic-Waterproof-Adjustable/dp/B01ICZAJL4/ref=sr_1_11_sspa?ie=UTF8&qid=1527898277&sr=8-11-spons&keywords=npt+bulkhead+fitting&psc=1

Buy a size that will accept your PVC pipe & run a section of pipe through it. Use PVC couplers on both ends. I guess you could do the same thing with the electrical, now that I think about it.

Hope that gives you some ideas,

Charlie
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PostPosted: Fri Jun 01, 2018 4:29 pm    Post subject: Re: Conduit Pass Through Question Reply with quote

One possibility is to use a "threaded bushed nipple" large enough for the conduit to pass through. A conduit-lock-nut will hold the bushed nipple in place.
Bushed nipples are threaded on the outside and smooth on the inside. Search Google for "threaded bushed nipple".


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PostPosted: Fri Jun 01, 2018 6:13 pm    Post subject: Conduit Pass Through Question Reply with quote

Joe and Charlie,

As always I know I could count on you!

For the water I think I'm going to go with the bushing that was pointed out


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