I think that we are all missing the point, the OP has posted because he needs a some help on what to do, I think as we are all nice happy people we can help him, so the answer is get a ELECTRICAL INSTALLATIONS person in,or someone that has done a 5 week at a centre and does know SH"T about SWA,RCD and electrical work, I do think there are lots of people on here that could tell him how to do it but,,,,,,,,,,,,,,As for his name when I first singed up after 20 min of trying to rester a user name ended up with egg67 when I wanted greg67 but hayhow, so did he just want eng not the hole thing we all Know the old boys have got the best user names, but I think JRC is up grabs