On Nov 1, 10:09*am, "BigWallop"
wrote:
wrote in message

...

I have fitted a spur to a double socket, however it was a tad tricky
since the conductors were not long enough. Is it 'OK' to hide screw
block connectors in the socket box ? The Muppet who originally fitted
the surface mount dual socket over the original single socket recess
did not manage to connect up the earth cable.. so I can't have made it
any worse !

Simon

Sockets are normally accessible, so screw connector block can be used in
this situation. *But, it all depends on the current rating of the block you
have used / are thinking of using to make all your connections in the
recessed box.

A standard ring mains can carry up to 30 amps, split between two conductors
sized at 2.5 mm each, so equaling 5 mm that should be connected to each
outlet point.

If you are thinking of connecting both of the original ring supplies
together and tapping from them to the original double and then the new
single spur outlet. *Then you will need connector block rated for at least
30 amps current loading to be sure it will cope safely with all situations.

Don't think you can get away with the smaller 15 amp rated connectors
because of the space restriction you have in the single back box. *You could
be asking for trouble if you do. *You could, if you are worrying about the
space, use two sets of 15 amp connectors, but do it safely by connecting one
supply directly to the spur and from there to the double socket and from the
double socket back to the second supply. *Thus keeping the full ring supply
to both outlets again.

Two sets of smaller connectors are easier to work with in the small space
provided by a single sized back box. *One set of connectors can be placed
neatly at the back of the box, with the other set of connectors placed in a
mirror fashion in front. *So leaving more room for the conductors to be
dressed safely within the rest of the space in the back box.

Good luck with the project, anywhoo.

Thanks for help, I think they must be 30A connectors but I will check
this. Is it as well to run a second 2.5mm T&E to the spur connection
box and use 4 terminal connectors then ? Is that what you are saying ?