Steve wrote:
I want to take a spur off a downstairs ring main. By far the easiest way to
do this will be to T-off the ring under the flooring, rather than from a
socket. (I'm currently redecorating. so I can get to under the floor.)

I understand that I can't use a standard juntion box, as regs requires that
screwed fittings need to be accessable. My question is - what sort of
fitting should I use?

This is that perennial question, what is 'accessable' in this context?

I think most would agree that under the floorboards it's usually OK to
use a standard JCB, whereas (say) it wouldn't be OK to do it where the
JCB is plastered into a wall.

David