In message ,
(Paul Draper) wrote:

I wish to extend a ring main into a new conservatory.

I have a socket on the existing ring that I can extend from.
Obviously one end of the old ring and 1 new wire from the conservatory
will be connected into the original socket.
The other pair of wires thus need to be connected together to complete
the ring.
I know that ideally I would use a 30A junction box to connect them
together, but I don't have any spare cable on the old ring. Is it OK
to connect the wires inside the existing back box using choclate block
or is this a big No No?

I don't think chocolate block would be *dangerous*, but it's not ideal,
and I don't think you'd have much luck fitting it all into a standard
depth backbox.

Do you *need* the ring in the conservatory, or could you get away with
one (double) socket spurred from your existing ring? If you need more
than one then a fused spur can be used, but the total loading on all the
spur sockets would then need to be kept below 13A (abt 3kW).

There are those here who would recommend crimp connectors, and they
would certainly take up less space than a chocolate block and probably
be safer, but this would also be a bit "non standard".

The other option is to find out where the ring goes from the existing
socket. If it just goes down under a suspended floor (for example), have
you thought about doing the wiring under the floor where you'd have a
bit more slack to play with?

Don't know if any of that is likely to be of help, but it was worth a
shot anyway :-)

Hwyl!

M.

--
Martin Angove (it's Cornish for "Smith") - ARM/Digital SA110 RPC
See the Aber Valley -- http://www.tridwr.demon.co.uk/abervalley.html
.... Monday is the root of all evil!