adding a double socket?

yes.color code wires and terminals on plugins.white wire on silver screw.black wire on brass colored screw.bare wire on green.plugs work this way .switches r different setup.

ck
December 2007

IF YOUR COMING OF THE RING MAIN THEN YOU CAN ADD TWO DOUBLES MAX AS YOU WILL THEN BE LOSING RESISTANCE IF YOU ADD ANYMORE YOUR STARTING A RADIAL SUPPLY

SMR ELECTRICAL
December 2007

Sockets in domestic households are normally wired in whats called a ring final circuit i.e. the cable powering the sockets (2.5 mm T+e) leaves the fuse board and is looped in and out of every socket in that circuit (normal to have 2,3 or 4 ring circuits in 1 house all rated at 30 or 32 amps per circuit) and then the last socket has a cable going back to the start of the ring and is terminated in the same fuse as the outgoing cable. The rules governing sockets for additions to this ring state that for every socket outlet one "spurred" socket is allowed, that is, one cable connected from an existing socket to a new addtional socket. If you wish to connect more than one socket to an existing socket then there are two methods a) extend the existing ring to connect the new sockets (in otherwords make the loop bigger but continuous), and b)use a switched fused spur connected to the existing socket and then the new sockets connected into this. Hope this not too confusing. There is a guide here with drawings.
http://www.diydoctor.org.uk/projects/Extendingringmain.htm
Good luck

Baz

baz
December 2007