Richard Casady wrote:
On Wed, 27 May 2009 08:25:22 -0600, "SteveB"
wrote:

A knife switch is just a straight piece of copper that looks like a knife.
On one end it is bolted to two strips of copper so it rotates. On the other
it fits BETWEEN two strips of copper. It is usually bolted on a board or
base. You've probably seen them in electrical panels. Not real common, yet
still used.

The cabin at the lake has fuses and knife switches.

Casady

I'll bet it has knob and tube wiring as well.