I have just taken out an old machine i bought a while back. I don't know how old it is, probably just 1980s, but it is definitely 240v single phase, however i dont recognize the wiring in it. The earth is easily seen but the other two wires are black and green. Which is neutral and which is live ? The 16 amp blue plug was not on it yet. I have just put it in to give an idea of the colour balance of the picture.