SWMBO in her new kitchen extension has this idea of an Island in the
middle which has the sink, dishwasher and a bit of other odd gubbins
thereon, and a couple of extra 13 amp outlets on some power pole thing.

Now whilst the drains and water are arranged to go there, the power
needs obviously to be tapped onto the kitchen ring main. This is up in
the ceiling and as usual drops down where needed to the wall sockets as
per normal practice.

However whilst I can take a cable down from the ceiling next to the
drain pipe which will be boxed in, in due course, the cabling has to run
under the concrete floor slab for a few feet before coming up inside the
Island unit.

How would this normally be done?. I don't suppose its the done thing to
just lay 2.5 T&E under the floor in the concrete so would it be better
to either put in a buried duct in the concrete floor slab, or simpler
still use some suitable 2.5 rated (2 lumps off to keep the ring main)
SWA direct bury cable?.

Any advice appreciated..

Cheers...
--
Tony Sayer