Extending Wiring behind Plug Socket

Not allowed by the regs I'm afraid. You could possibly crimp an extra bit on but you need the right tools and heat shrink and even then it doesn't really meet 100% with the regs.

 

Things like this I've solved in the past by moving the back back and/or re-running one of the lengths of the cable feeding the socket, if it's a ring.

 

Come on Col, there's nothing at all wrong with extending the wires whithin the back-box.
Reepers, there's nothing at all wrong with what you're planning, if the connections are whithin the back box there's no need for crimping, just connector blocks will be fine. 15 amp ones will be sufficient and will be easier to get into the space than 30 amp ones, also will make a better connection to the cables. No need for tape either, it's in an enclosure!

 

15 Sen?

 

Yes FH, if it's a ring and fused at 30/32 amps each conductor will only be carrying half the current even at full load. Also, using connectors that are too big for the cable risks poor connections because the wire can end up down one side of the screw instead of underneath it!

 

Crimping single core cable is always viewed with a little uncertainty.
Having to move crimp jointed cables around to get it all into the back-box isn't good as it can easily loosen the connections. In your situation I would use connector blocks, as I said earlier there's nothing wrong with this in your situation. There's only really need for crimping where the joints are going to be inaccessible.

 

Ideal push fit and your done

32A rated all day long per leg of the ring final

http://www.screwfix.com/p/ideal-in-sure-2-port-push-in-wire-connectors-pack-of-100/50427

Crimps. . .? not in use since these came along

 

Yes I was going to mention Wago's Sparky but several of them can be a bit cumbersome in a confined space (in a back-box)

 

If your carful and utilise the space, its an easy job, well far easier than effin' about with a crimper in a 25mm 1G back box thats for sure

 

Yes I do agree with you there Sparky that's why I suggested connector blocks, especially for someone that might not be very experienced with crimping!

 

Um I read it as though the choc box would be outisde the back box, my mistake

 

2 x 2.5 twin & earth and either wagos or blocks all stuffed into a 25mm back box.......only a diy'er but cant see it fitting whilst keeping the cores tidy and not acutely bent

Crimps possibly but may be better to chop out deeper and do a nice job, plenty of room for connections

 

What's wrong with the cores being bent then Dave? Lectric does go around around corners ok, it doesn't slow down like water in a tight bend! Seriously though, it will be fine.

 

I prefer the in-line wagos for things like this.

http://www.screwfix.com/p/ideal-spliceline-in-line-wire-connectors-pack-of-100/72727

 

If it's a ring, then the connectors should be 20A.
I have seen this solved by simply, turning the socket upside down.

 

As I said Sen, I'm just a dreaded diy'er but always thought that the cores should be gently bent back into the box, in a loose curve, not actually folded over to avoid stressing the copper - I may well be wrong of course