"Widowmaker"?? well, this is not an "American 5" circuit without a power transformer; but if RipDoozer is married, he almost made a widow of his wife. IMho, rip should consider that being able to pick his butt up after finding himself on the floor a 'free pass'. Even with an amp that is properly grounded, one will always want to check that other equipment is not waiting to put one at risk. B.B. King was in the long term habit of making contact to the mic with his guitar strings---while NOT touching any ground point on the guitar---to check for such dangers. That is a crude but effective way of keeping one's self somewhat safe. A meter is a good tool to have to check such things. A wall circuit checker is an inexpensive safety tool, imho.....one would like to know how the AC socket in the wall is wired. Less than $10 will tell you that...carry it wherever you go. There is one outlet in this building here that I do NOT use because that checker told me that it is improperly wired. IT is not my building, it is not in a position that I want to use anyway, and there are many other properly wired circuits to use. I checked those sockets before I moved stuff in here.