OK, you may re-call my intention to re-wire using armoured cable a 1-bed flat. I've opted for the 16mm SWA. I purchased from a wholesale distributor 12metres, and the invoice shows:
6943 x 16.0mm 3 core PVC/SWA On looking at it there is the 3 cores in brown, grey and black - no bare earth or green sleeved earth. At first I thought they'd given me 3-phase cable - so a quick call and they said just green sleeve the grey cable and use that as earth. Er, didn't sound quite right, and an on-line guide (list of all cables) pointed out that since the colour change 'black' is the old 'yellow'. So it's Brown - Live , Grey - Neutral , Black - Earth along with a sticker for mixed colours, and earth the armouring to the earth block, or terminal in the fuseboard. But, it appears the same dimension as the 2 conductors - and previous contributors had pointed out that a 16mm earth would be needed to run alongside the SWA.does this solve the problem, or am I missing something? Further the cable states on it: ELECTRIC CABLE 600/1000volts BS 5467. Don't see a problem with that, bit appears overkill
Hugh (Bright spark) - (even brighter if I get this wrong - briefly)