I got electracuted fixing a 220 volt wall heater were I worked. My coworker said he would pull the braker for me and he pulled the wrong one. Well I went to fix the wires and the wires were alive and I could not disconect myself from them. I finely thru myself backwords and yelled out for help! I was in the hospital for a week with electical burns on the tips of fingers and it messed up my heart. Can't express enough how importent it is to "UNPLUG" no matter what!