Don't laugh guys. My old boss had one of those drills that I had to use when I was a young apprentice just starting out. As for the 3rd wire, well it didn't exist. Somewhere I beileve it was missing and never used. I remember drilling holes in a damp and wet basement. The water had seeped into my shoes and the drill had a small voltage leak. I pulled the trigger and got wacked. So what did my boss do, he gave me a cement cinder block to stand on in order to finish drilling the holes. No more shock! I can't believe how stupid, but lucky I was. It wouldn't happen like that these days.
