PVC conduit question

[D Skelton]

Anyone know a good way of sealing an an entry to a PVC conduit box to make it water tight?

What I'm wanting to do is use PVC conduit for an outside lighting installation. Where the lights are to go, my intention is to use a short length of flex from the light to a terminal in a T shaped conduix box. Now obviously, two of the three entries into that conduit box will be sealed by the entering conduit on either side but what about the downwards facing entry that is used for the flex? My thoughts were to use a compression gland, but they are threaded whereas the conduit boxes aren't. Also, on one of the conduit boxes, there will be a total of three lengths of flex exiting from the one conduit box entry so a compression gland would be totally out of the equasion for that one. Edit: I guess I just want to exhaust all the options before I resort to pumping it full of silicone haha.

Any ideas? I'm hoping my explanation is ok, if it isn't let me know and I'll try and elaborate.

 

[Adam W]

Could you use an adaptable box and compression glands instead?

 

[pennywise]

With the T box solvent weld a very short length on conduit into the third spout then glue a female coupler onto the length of short conduit, this then gives you the threads to screw the stuffing gland into. Personal opinion use Wiska boxes and male adaptors that can screw directly into the boxes, then just screw the glands into the pre threaded knock outs

 

[Des 56]

A female adaptor glued in using a extra short piece of pipe,then the stuffing gland screwed into the adaptor



I came third in that reply
bronze medal maybe
Hawk was a comendable 4th

 

[Hawk81]

Fit a conduit adaptor 20mm Adaptor Female Thread White via a small piece of conduit and pvc glue to your T box then screw a stuffing gland into it. For the one with 3 use an adaptable box with 3 stuffing glands

 

[Hawk81]

I must be the slowest at typing lol

 

[D Skelton]

Man I'm such an idiot! Why didn't I think of that?! Talk about thinking outside of the box haha. Cheers guys, much appreciated!

 

[Des 56]

Man I'm such an idiot! Why didn't I think of that?! Talk about thinking outside of the box haha. Cheers guys, much appreciated!

Dont do yourself down
You were 5th on a forum of 30,000

 

[Knobhead]

Just be sure there’s an egress hole for damp. I’ve only worked on plastic stuff once, every box along with its joints were full of water.

 

[malcolmsanford]

Or..........................instead of a "T" box use a through box, drill 20mm hole in the box lid and fit a 20mm stuffing gland via a locknut.

 

[Ponty Massive]

Or..........................instead of a "T" box use a through box, drill 20mm hole in the box lid and fit a 20mm stuffing gland via a locknut.

Was thinking the same except using a spout lid. Just not sure if they do them in PVC.

 

[telectrix]

or fill box with magic gel.

 

[Wiredspark]

I would have use an IP rated joint box. Any continuous conduit from that can be connected using male bushes and adaptors etc and the cable exit points can be stuffers.

 

[sparky3366]

Don't forget the lid seals...

 

[somersetsparks]

I would probably use galv or b/e metal boxes with male adaptors in, then you can just thread stuffers in.
Second would be the spout lid, although I always prefer to have outdoor cables coming out the bottom of boxes.