bradharris said:
I would strongly urge you to wait for your sparky mate to at least be around to advise you on this. I cannot see how any of the advice given could lead you to believe you are now ready to proceed. Changing a DB and installing a shower are BOTH notifiable (you must inform Building Control - before you start).
Changing the DB is way beyond the scope of a DIYER who is asking what size cable to use for a shower. Do you know about EEBADS and the testing requirements after a DB has been installed?
Without wishing to seem over dramatic you could kill yourself doing this job mate.
