Electric for Log cabin.

[diycooper]

I am looking at getting electric put in log cabin, In my loft I have a 10mm T & E cable isolated which runs to the fuse board on a 40amp fuse. I was thinking of connecting 2.5mm SWA cable to the T & E in the loft then running it down my house and burying underground to the shed. In the shed connect it to a garage consumer unit with 2 fuses. 1 32 amp fuse for a ring sockets and 1 6amp for a light. What my question is 2.5mm SWA cable sufficient ?

I know 4mm would be better but taken diversity into account is the light going to make a massive difference ?

Thanks

 

[diycooper]

wrong place mod please delete

 

[winston1]

If it is on a 40A fuse you can't use 2.5. For 2.5 you must use a 20A fuse.
You cannot do this sort of work without contacting Building Control and having it inspected for part P, or are part P registered yourself which you are obviously not otherwise you would not be asking this type of question.