On 27/11/2007 23:18, Rumble wrote:

Note that if your commando socket only has 4 pins then you have no neutral!

It's 5 pin, wired in 5 core SWA 4mm^2 to the commando socket; then wired
in "semi-flexible" cable with transparent plastic outer over a tinned
braid woven over the cores from commando plug to UPS, total length about
15m.