Rather than suing, he should be thanking G-d he is still alive.
Most of the stuff is light amperage...if it was like our 110, he would vibrate a bit and his own reflexes would probably drop the connection. 110/220 isn’t bad with low amperage. I have had 110 at 15 amps for a couple of seconds and it ain’t that much fun.
Suing for his lack of common sense? Thats the problem with it all he talked to a lawyer and wants some “easy” money.