How to bring a cable out of a junction box

[davidxt]

I am installing an external light to the side of my house. There is an existing light in place but the supply cable exits the house in the wrong place for the new light. So I am using 25mm plastic conduit and weatherproof plastic junction boxes to bring the supply to the correct place on the wall, about 3m away. This ends in a 1-entry circular terminal box, or that was my intention.



But I have searched and cannot find the fittings I need to corrrectly get the cable from the new PIR lamp into the end of the conduit arrangement. If I end my conduit in a circular box as shown - or perhaps a two-entry version of that, I cannot find a gland or grommet to ensure waterproof entry for the cable. If I look at square junction boxes, I can see how a gland/grommet fits for the cable exit, but not how such boxes attach to 25mm conduit pipes.



Please can someone tell me what is the correct way to get my light cable into the conduit's terminal box?

 

[James]

Drill a 20mm hole in the lid, then use a suitable compression gland.

 

[Megawatt]

I am installing an external light to the side of my house. There is an existing light in place but the supply cable exits the house in the wrong place for the new light. So I am using 25mm plastic conduit and weatherproof plastic junction boxes to bring the supply to the correct place on the wall, about 3m away. This ends in a 1-entry circular terminal box, or that was my intention.
View attachment 92614


But I have searched and cannot find the fittings I need to corrrectly get the cable from the new PIR lamp into the end of the conduit arrangement. If I end my conduit in a circular box as shown - or perhaps a two-entry version of that, I cannot find a gland or grommet to ensure waterproof entry for the cable. If I look at square junction boxes, I can see how a gland/grommet fits for the cable exit, but not how such boxes attach to 25mm conduit pipes.

View attachment 92615

Please can someone tell me what is the correct way to get my light cable into the conduit's terminal box?

That box looks like it already has knock outs which looks like 10mm screw ins

 

[littlespark]

Slightly out of date post, but that junction box shown on #1 is a cheapo BG IP rated box from Screwfix. Nothing wrong with them.
The knock- outs are simply push out caps that reveal a 20mm hole.

Some of the caps simply fall out, so a little dab of glue or silicon on the ones that need to stay put