Personally, I routed the cables horizontally in the kitchen (it's basically the only time I would consider horizontal shallow buried unprotected runs). The sockets come thick and fast and are horizontally adjacent. It saves a lot of cable and means you don't run into total ring length issues which can quickly come up if you are using 4m per socket drop plus the distance between.
Christian.
Hi all
I will soon be routing cables for my kitchen re-furb and wondered about the best practice here. This is an extension with solid floor so all cabling routed in loft then drops to fittings etc. Currently cables are clipped neatly to joist sides in loft space and pass through drilled holes when running perpendicular to joists. This obviously means that when I re-insulate with 100mm or more, the cables are buried and need down rating accordingly.
In new installs, is this insulation issue considered i. e. are cables trailed across the joists with insulation pushed underneath. Any recommendations on best practice appreciated, bearing in mind BCO involvement and Part P of course!
TIA
Phil
Me too, but I think the OP was more concerned about the loft. Put the insulation under the cables, cut a channel in it if required.
Don't consider it, do it.
"Christian McArdle" wrote
Good point, what is the length limit for 2.5 T&E ring circuit? At the moment, the kitchen is just an extension of the downstairs ring, but I am considering separating these.
Phil
No need for consideration. Anything else is unacceptable. I actually have 3 different socket circuits in my kitchen. One general purpose. One fridge/freezer only, to reduce the risk of food spoilage. Finally, one for laundry appliances and dishwasher so there are no heavy loads on the general purpose ring.
Christian.
That depends...
----------------------------------------------------------------- Max. cct. lengths for 30/32A ring circuit using 2.5mm^2 T&E cable ================================================================= Earthing type Overcurrent device Rating TN-S PME ------------------------- ------ ---- ---- Cartridge fuse (BS 1361) 30 A 90 m* 90 m Rewireable fuse (BS 3036) 30 A 91 m** 91 m MCB Type B (BS EN 60898) 32 A 88 m 88 m MCB Type C (BS EN 60898) 32 A n/a 76 m ================================================================= Notes: * - requires R2/4
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