"JupiterJon" wrote in message
...

snip

For sockets does this mean that if I used some big chocolate block
at the
back of the socket box and ran an additional star-wired cable down
the
conduit that would be OK?

Why would you need to use a 'choc-block' in the back of a socket box,
why can't you use the socket terminals, or are you proposing to
remove the existing face plate?