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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Electrical Questions >> Another (probably daft) question about sockets https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1627820109 Message started by Natedog on Aug 1^st, 2021, 1:15pm

Title: Another (probably daft) question about sockets
Post by Natedog on Aug 1^st, 2021, 1:15pm

I'm fitting some metalclad sockets inside a steel box that's going to house a cctv unit. It's going to have 2x double sockets. Someone suggested joining the 2 back boxes together with a 20mm conduit coupler and some threaded bushes, so they are one rigid unit.

Usually you would put a rubber grommet on the knockout to stop the cable chafing. If I join 2 boxes together, does it still need something to stop chafing, or is making sure there are no sharp or rough edges on the bush good enough?

Title: Re: Another (probably daft) question about sockets
Post by Lectrician on Aug 8^th, 2021, 9:01pm

No. The bush is better than a grommet. Conduit coupler and bushes to join boxes, a TRS gland to allow supply cable in. It provides restraint, where a grommet won’t.

Title: Re: Another (probably daft) question about sockets
Post by Natedog on Aug 19^th, 2021, 11:48pm

Thanks dude ;D