Entering the top of a 3R enclosure?

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frankft2000

frankft2000

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Maine
I would like to bring a 2" pvc conduit into the tip of a type 3R wireway. Is there a legal way to do this, either with a myers hub, or a regular pvc male adapter with a o-ring? The inside of the wireway would be used as a junction box, no live bus.

Thanks
 
Technically you cannot use a terminal adapter with a Myers hub. You could go Myers hub to close nipple to PVC-RMC adapter.
 
infinity said:
Yes that's it.



As ridiculous as it sounds most hubs are only listed for those conduit types in EF's post. So screwing a terminal adapter, EMT connector, SE cable connector or something else with a straight thread is a technical violation.
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RMC has tapered threads but don't RMC couplings have straight threads?
 
Little Bill said:
Although it's hardly ever enforced, (at least in my area) the PVC male adapter has straight threads and the hubs have tapered threads. They thread in but don't seal well.
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I've never seen a PVC male adapter that has straight threads. Most I've seen have tapered threads. FYI, a "PVC-RMC adapter" is called a female adapter.

Carlon makes a product of neoprene O-rings for this application. Unfortunately limited in trade sizes, and not regularly stocked at supply houses.
http://www.carlonsales.com/techinfo/brochures/conduit/Conduit_Bodies_Brochure.pdf

Heyco also makes a product line of nylon sealing washers. I haven't seen formal documentation on its listing, but I have seen other manufacturers (SMA), specifically instruct you to remove the washer from flex connectors and replace it with this one, when connecting to the top.
https://www.heyco.com/Hole_Plugs/product.cfm?product=Bushing-Sealing-Washers&section=Hole_Plugs
 
The male adapter with the O-ring and locknut would be the best way to go, even though it's the worst choice for a weatherproof installation.

JAP>
 
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