Dave Plowman (News) wrote:
In article ,
Ed Sirett wrote:
If two of the pairs of wires (int the socket) are nicely joined with a
proper crimping tool. If all the earths are properly sleeved and joined
If the back box has (a) grommet(s) fitted for the new cable exit(s). If
the resulting new ring is still compliant for total cable length (for
the given fuse or MCB) and for expected loading and for the served
floor area. Then it's probably OK.

There's no need to crimp if the connection is inside the backing box - a
choc block will be fine as it's accessible. Might be tight if it's a
shallow box, though.


One of the backboxes in my house (not put in by me...) has 5 sets of wires

2 for the original ring. 2 for the ring extension. 1 for the spur.

All done tidily enough, though I scratched my head when I first saw it.
Only found it because I replaced the CU and the resistances for
Phase/Phase and Phase/Earth didn't add up - they'd married all the
earths together, so the earth resistance was about half what it should
have been for a straight ring.

Ben