I was once mowing the lawn with an electric mower using an extension cable. The mower kept cutting out so i unplugged it from the extension cable, checked the plug it was fine. Next step check the extension . '' Turn off the extension '' i shouted to my wife. '' OK, i have done '' she shouted back. So i took the cover off, and spotted a loose wire, a red one. So i put my finger in to put it back into place. A 240 volt shock shot up my arm and i jumped in the air throwing the extension away as i did. Mr Fosberry eat your heart out. I slowly walked back in the house rubbing my arm. My wife had turned the plug off. The one next to the extension plug. I pointed out the error to my wife, '' Oh'' she said .'' Never mind'' Now there's a woman's logic for you