R
rryles
Looking for some advise on how to supply some sockets on a kitchen island through a floor that will have wet underfloor heating.
The floor hasn't been started yet, so I've got the choice of which layer to install it in. The complete structure of the floor starting from the bottom will be: earth, sand, damp proof membrane, 100mm rigid polyisocyanurate insulation (kingspan/celotex style), Heating pipes in clips and covered in ~70mm cement screed.
I'm thinking of installing a duct in the insulation, deep enough to be out of the way of the pipe clips. I'm open to alternative suggestions though.
The rest of the sockets in the kitchen will be a 4mm² radial on a 32A MCB. As the cable will be quite heavily derated I'm considering a lower rated protective device for this (either a fused spur or dedicated radial). I could also do with a bit of help working out just how severely derated the cable needs to be. The closest I can see is reference method A, with an ambient temperature factor.
The floor hasn't been started yet, so I've got the choice of which layer to install it in. The complete structure of the floor starting from the bottom will be: earth, sand, damp proof membrane, 100mm rigid polyisocyanurate insulation (kingspan/celotex style), Heating pipes in clips and covered in ~70mm cement screed.
I'm thinking of installing a duct in the insulation, deep enough to be out of the way of the pipe clips. I'm open to alternative suggestions though.
The rest of the sockets in the kitchen will be a 4mm² radial on a 32A MCB. As the cable will be quite heavily derated I'm considering a lower rated protective device for this (either a fused spur or dedicated radial). I could also do with a bit of help working out just how severely derated the cable needs to be. The closest I can see is reference method A, with an ambient temperature factor.
