I would like to install a double socket in my loft but the upstairs ring main cables come up from the ground floor, making a spur up through the stud partition walls difficult. Up in the loft the only mains cable I can find is the radial circuit for the electric shower in the main bathroom. It has its own 32A Type 2 fuse in the consumer unit. The only other cabling up there is for the upstairs lighting circuit, which also feeds the shaver points.
Can I take a spur from the shower circuit to feed a new double socket and, if so, what is the best way to do it, i.e. via a junction box?
The alternative is to use an extension cable from the mains socket on the landing whenever I'm up there but I'd prefer to have a more permanent arrangement.
Any advice much appreciated!