Also, without standing in a puddle, a Sim will get electrocuted once and not die. If you send him/her back to repair the electric object again while still singed, they may die that second time. There have been times, however, when I had a Sim repeatedly try to repair a computer and got shocked each time, but didn't die. I've had two die of electrocution and both were attempting to repair the transporter. I had a third die of electrocution from repairing a stereo, but she had the Unlucky trait and Grim didn't take her.