I have some 12v spotlights in my bathroom. I needed to move one so disconne cted it some time ago and have eventually cut the new hole today. Having no w forgotten which way it was wired I thought I should check with a multi me ter to be on the safe side. It is 3 core and earth and the results (all AC) are as follows
With switch off Grey - brown 146v Grey - black 240v Brown - black 76v
With switch on Grey - brown 240v Grey - black 240v Brown - black 0v
So for this I conclude that Grey is neutral black is perm live Brown is switched live
Is this correct ? More worryingly any idea why I am getting spurious voltag es when the switch is off?
Thanks in advance