This was one of my favorites I ran into a while back. HO called to advise of a no heat issue. Arrived to find I had no power to furnace in crawl space. Traced wire back around a corner and found this. AMAZING
http://i277.photobucket.com/albums/k...30-06_1113.jpg
Just shook my head and told them they needed an electrician first, then call me. I left and never heard anything since.