When working in "interesting places", the
survivor always checks out the "earth"! In the UK, we are used to the "earth" being pretty closely tied to neutral, but that cannot be assumed elsewhere. The so-called earth is often not there at all, or can also be about half way (voltage-wise) between line and neutral (due to being tied to the centre tap of a transformer somewhere). And of course, there are the joys of 110 and 220 volt mains supplies being available (often within the same room, and from the same configuration of outlets). It's great working overseas ... you get to put all that rusty theory into practice! Again, the trusty multimeter comes in handy!
