Extending a ring

[hightower]

What do people tend to use as a connector when extending the ring, and the terminations are carried out in a knock out box? Push in wagos are rated at 24A, or the lever type at 32A.

I think (please correct me) 2.5mm enclosed in plaster (ref method C) has a CCC of 27A, so the push in wago would not be suitable at 24A. The lever type at 32A would be suitable in terms of CCC as least, but would it be the best tool for the job?

I've read some people crimp the two cables together, and I've seen others use chocolate blocks.

I think crimping would be the best (smallest size and most secure), but the red butt crimps were rated at 19A and the blue butt crimp at 27A (so I'm thinking as this matches the CCC of the cable it can be used).

Sorry, this turned in to a bit of a long winded post about not much, but would appreciate your thoughts/advice.

 

[telectrix]

crimps are not always a good joint on solid core cable. push-in wagos @ 24A are suitable for connections on a RFC as it's the design current that you use, not the ccc of the cable. rare to see > 20A on 1 leg of a rfc.

 

[happysteve]

What telectrix said ^^^

433.1.204 is the reg you need to back this up.

 

[hightower]

What telectrix said ^^^

433.1.204 is the reg you need to back this up.

Thanks, only got BGB in digital format, will check the BYB when I get back home.

 

[happysteve]

Thanks, only got BGB in digital format, will check the BYB when I get back home.

433.1.103 in the BGB. Same reg, looks like they just renumbered it.

 

[hightower]

433.1.103 in the BGB. Same reg, looks like they just renumbered it.

You're like a flipping dictionary mate, fantastic! So provided my connectors are not less than 20A it sounds like I'm good to go. So, just to finalise my learning on this area, 2.5mm in ref method A would not comply with this reg and 4mm would need to be used? (or a different method used)

 

[happysteve]

You're like a flipping dictionary mate, fantastic! So provided my connectors are not less than 20A it sounds like I'm good to go. So, just to finalise my learning on this area, 2.5mm in ref method A would not comply with this reg and 4mm would need to be used? (or a different method used)

You'd still be alright with ref method A, says 20A in my book. Assuming no derating factors (e.g. 3036 fuse, grouping etc).

 

[hightower]

You'd still be alright with ref method A, says 20A in my book. Assuming no derating factors (e.g. 3036 fuse, grouping etc).

Going to check at home, I only have BGB to hand when I'm work so probably working on a different figure.

 

[Leesparkykent]

What do people tend to use as a connector when extending the ring, and the terminations are carried out in a knock out box? Push in wagos are rated at 24A, or the lever type at 32A.

I think (please correct me) 2.5mm enclosed in plaster (ref method C) has a CCC of 27A, so the push in wago would not be suitable at 24A. The lever type at 32A would be suitable in terms of CCC as least, but would it be the best tool for the job?

I've read some people crimp the two cables together, and I've seen others use chocolate blocks.

I think crimping would be the best (smallest size and most secure), but the red butt crimps were rated at 19A and the blue butt crimp at 27A (so I'm thinking as this matches the CCC of the cable it can be used).

Sorry, this turned in to a bit of a long winded post about not much, but would appreciate your thoughts/advice.

http://www.idealindustries.co.uk/product/12/557/67825/.html

 

[Leesparkykent]

Although I did hear a rumour from Geordie that Tel likes to use these lol

 

[hightower]

SpliceLine In-Line Wire Connectors - Wire Connectors - IDEAL INDUSTRIES

I've used those before and love them - not sure why Wago don't offer an inline option, and also why Wago's is 24A but that link is 32A rated.

Could those inline fittings be used to extend most circuits in a CU move? Not thinking of doing it, just another question that popped in my head and wondering whether they'd be suitable.

 

[Leesparkykent]

I've used those before and love them - not sure why Wago don't offer an inline option, and also why Wago's is 24A but that link is 32A rated.

Could those inline fittings be used to extend most circuits in a CU move? Not thinking of doing it, just another question that popped in my head and wondering whether they'd be suitable.

Yeah up to 2.5mm will be fine.

 

[GMES]

Hellerman do a push in connector same as wago which are now rated at 32a, and I think there is another wago type that do an inline connector just can't remember the make.

Edit** the hellerman ones come with a little push tool so it can be re-used.