Here are a couple of photos of a mains disconnect we were called to at a Lebanese Restaurant in Battersea (central london)
The client wanted our company to do the final certification on this job!!!!
You can see the faults on the board.
#1, Too many cables on the incoming supply #2, Too many cables on the out going side #3. No earth connection #4, Dangerously hot, to the point of ignition #5, Just plain lethal