Builders Ive used before in the surgery and other places. Theyve always been reliable and done good work with me.
The electrician is the first, didnt really shop around
And the plumbers, dont go down that round, worst mistake i made in my life. a 2 week job in plumbing 2 bathrooms has now taken over 4 months and theres still leaks.
Yes your right, it wasnt the answer I was after but looks like i will have to wait. As i work during the week, Im not around hence why i wanted to buy everything in over the weekend.
10mm2 with a 40A MCB behind a 30ma B type RCD.
Personally, I would go with an RCBO.
http://www.gil-lec.co.uk/products/C...MK+RCBO+40a+30mA+17th+Edition+RCBO/3579900800
Max cable length 66 metres for both TN-C-S and TNS Earthing. Good for installation methods A,C,100,102 (Enclosed in conduit in wall, clipped direct, in roof/floor with <100mm insulation, in roof/floor >100mm insulation).
Hope this helps.
You really need to get your leccy to do their sums though. If you end up zapping yourself, its your own fault.
Table C9.2 to "Guide to the Wiring Regulations 17th Edition". Available on the net as an illicit download if you know where to look.