You sound like you know what your talking about... unfortunately I know very little about electrics etc.
I'm running my rig in a rack setup. There is some US and UK gear in there so there are different power supplies (using power convertors). I'm running the Triaxis through its own independent plug an power adaptor as it is grounded and requires some serious power. However, everything else is running off an extension plug board (can handle six plugs).
How would I find out about an open ground line? How about the transposed phase? Sorry for the basic questions, just never had to tinker with wiring before.