Size of Submains

[kevben]

Got some one bedroom flats to wire & install Submains. Usually would install 25mm 3 core SWA (just to cover myself) but prices are tight.Flats only have lighting, sockets and cooker as heating supplied with Gas boiler.
Question is:- Would 16mm 3 core SWA be ok

 

[johnboy6083]

sounds to me like it will be ok. a family home with 4-5 bedrooms and garage withoutside lights ect will usually have 100Acutout and 25mm tails, so in your situation i think 16mm will be fine. i tonged my tails a few years ago, when i lived in a 1bed flat, with cooker on full (oven too) and all lights, tv, iron ect, and it was 45A.

 

[hsuelec77]

Have you ever used split concentric cable, no terminating into glands and use k.m.f switches instead of sp+n switched fuse(metalclad)
im sure you will save some money this way.