Opinions please.

[Dave OCD]

I have an extension to wire this week which is a garage conversion comprising a study, shower room and small store area. The supply is TT and I'm intending on running a 16mm sub main from the existing mains position under the suspended floor through the hall in the house and installing a new small CU with RCBOs in the new store area. Due to the earthing arrangements I'll fit an S type 100ma RCD and 60a Switch-fuse [possibly 63a MCB] at the supply end, either seperate units linked by tails or integrated in one unit if I can source something suitable. Do you think these items should be Amendment 3 compliant as I don't think I've seen such a beast yet ? Any pointers to similar recently used kit would be welcome. :smilewinkgrin:

 

[Dave OCD]

then use it then. only thing with them is they're designed for incomer at bottom, out at top. can fuse at 40,60,80 or 100A.

ewdit: and the switch is down for ON.

And the S type RCD could be right next to it in a nice insulated enclosure but I'd be contravening the regs Tel.... :mad2:

 

[Vitesse]

I used one of these recently on a job. Tails in the top using Wago sprint glands in one knockout. 16mm SWA glanded at the bottom. Comes with 3 fuses and mine had a metal hinged door on it rather than the plastic in the picture.

https://www.tlc-direct.co.uk/Products/CGFS100.html

Only downside is it is a bit big if your tight for space.

 

[Dave OCD]

I used one of these recently on a job. Tails in the top using Wago sprint glands in one knockout. 16mm SWA glanded at the bottom. Comes with 3 fuses and mine had a metal hinged door on it rather than the plastic in the picture.

https://www.tlc-direct.co.uk/Products/CGFS100.html



Only downside is it is a bit big if your tight for space.

That could be ideal, could even put the S type RCD in that instead of the 100a DP switch , tin hat on now.

 

[b55.v2]

my understanding of the new regulation is that only domestic consumer units and "similar switchgear containing OPD's" need to be of a non combustable construction.

a standalone rcd has a completely different British standard / product definition to a c.u. therefore would fall outside the requirement and a pvc enclosure could be continued to be used.

to put it another way , you may find that on a TT arrangement the dno may prefer or even insist on double insulated upfront isolating / rcd enclosures for obvious safety reasons.

 

[davesparks]

my understanding of the new regulation is that only domestic consumer units and "similar switchgear containing OPD's" need to be of a non combustable construction.

a standalone rcd has a completely different British standard / product definition to a c.u. therefore would fall outside the requirement and a pvc enclosure could be continued to be used.

to put it another way , you may find that on a TT arrangement the dno may prefer or even insist on double insulated upfront isolating / rcd enclosures for obvious safety reasons.

Where did you get the 'containing opds' bit from? It doesn't say that in the regs.

A standalone RCD in a 2way enclosure is very similar switchgear to a CU.

Why would the DNO give a monkeys? After their terminals they really don't worry too much unless your tails are too long or you damage their network somehow

 

[Dave OCD]

Where did you get the 'containing opds' bit from? It doesn't say that in the regs.

A standalone RCD in a 2way enclosure is very similar switchgear to a CU.

Why would the DNO give a monkeys? After their terminals they really don't worry too much unless your tails are too long or you damage their network somehow

The RCD will be going in the same Amd 3 Compliant enclosure as the cartridge fuse, the RCD will take the place of the usual DP switch [100a rated 100ma time delayed] so I'm covered and it'll be a nice tidy solution.