By Alan Trauger Knob and tube wiring was a system of open electrical conductors supported on ceramic knobs. It also used ceramic knobs where wires cross each other or pass through framing. This type of wiring was in common use from the 1880′s to 1930′s, in North America. During the era when knob and tube [...]
From the category archives:
Find a good estimate on what your project will cost with this easy tool.