[Leo.G (Leo)]

Probably Martin just thinking general electrical problems not thinking about mounts. Come to think of it it may have been an issue with an old 220V clock drive I used on an old mount years ago.
Now here's a funny thing, I run a separate earth lead and tent peg to the leg of my mount or I always get a tingle through the legs from the power brick and it doesn't matter what power brick I use. Nothing scary but I have wire soldered onto adhesive copper tape attached to the front leg and an RCA connector I put a RCA plug soldered to a tent peg and poke the peg in the ground.