This link: http://www.telegraph.co.uk/news/2017/03/17/man-died-charging-iphone-bath/ Briefly, a man was using his iPhone in the bath while he was charging it. He dropped it in and was electrocuted. How? Where did the mains reference come from - transformer? Optocoupler? Y-Class capacitor? I always thought Apple chargers were well designed safety-wise. Isn't a bathtub isolated electrically? (Yes, the taps are bonded, I know). Why didn't his RCD (GFCI) trip? In short.... how?