Re: C'mon, Dr. S, this kind of trolling is beneath you.
"giving a tingle that shouldn't have been there"
You're lucky nobody got killed. Clearly there was something wrong with the unit. Insulation (even the cheap-assed crap that came out of Japan/Taiwan in the '70s) would never have broken down at a mere 240 volts. I take it nobody in that company ever played the HiPot game?