08-01-2017, 08:42 AM
I worked on an old house once that wasn't grounded. Metal flex conduit throughout the house was energized. Other metal conduits were self grounded and not carrying current. Very dangerous situation.
Also: A switch either shorted out or fused closed is not likely to catch fire. They just burn out inside the box which usually has a 2 hour burn rating.
Also: A switch either shorted out or fused closed is not likely to catch fire. They just burn out inside the box which usually has a 2 hour burn rating.
One Thing I can always be sure of is that things will never go as expected.