how would you add a box to this post

[sccscc]

I purchased an Arlington outdoor post with a 1 gang covered in use box.

Would really like a 2 gang outdoor post, but there is no such product. I think I can add an extra box by drilling a hole in the post on the opposite side of the Arlington box. What the best way to make a water tight connection? I'm thinking a rigid close ****** to connect to the extra box, along with a rain tight conduit hub connect to the post. Any suggestions?

Thank you

 

[Stuart in MN]

What model Arlington post do you have? Is it one of their Gard-N-Post models from their website? http://www.aifittings.com/catalog/gard-n-post/

 

[Dustball]

Need a picture of what you're working with.

 

[sccscc]

Thank you guys for replying. Since I'm a new member (been reading the forums for a long time, just never joined), it won't let me post a link or pictures

This is the post. If you look on amazon at the first review, someone posted a picture of how they added a box to it. It doesn't look like they used a water tight hub. I want to make sure I do it right.

GPD19B-1 Gard-N-Post Low-Profile Outdoor Landscape Lighting Post Enclosure with Outlet Cover

 

[sccscc]

In good faith, I'm going to bump up my post count to 5 so I can show the picture of what I want to do

 

[sccscc]

almost there

 

[sccscc]

Here is a picture of the Arlington post. I connected a rigid close niplple to the extra metal box and want to drill a hole to connect the water tight hub to the Arlington post.

 

[Shiftless]

How about going directly into a hole in the post with that ******? The box would be flush with the post. Apply a liberal amount of silicone sealant to the mating surfaces and use a lock ring on the inside of the post to pull it tight. Add a bushing if you want.

 

[Bert_]

Use a sealing locknut. Skip the silicone. No conduit is ever watertight. A little moisture may find it's way in, it's fine as long as you give it a place to get out. A bunch of caulk makes it worse.

 

[Dustball]

I'd sand/file the back of the box flat then screw the box to the post. Apply some silicone sealant on the mating surface on the sides and top (upside down U shape) to keep the water from leaking in but leave the bottom unsealed so if anything does get in, it won't be trapped.

 

[sccscc]

Thanks everyone for the suggestions, great ideas. I decided to just use a 1 gang switch and outlet to avoid having to add the extra box. I needed a switch and wanted duplex outlet, but the extra box hanging off, even if flush, didn't look good. If I need to add another box, I'll just get another Arlington post and put them side by side. That looks better and keeps the UL certification