"Knob and Tube" refers to a type of wiring commonly used from the late 1800’s until the 1940’s. At the time it was cost ...

Knob-and-tube wiring is an antiquated system of electrical wiring that uses porcelain knobs and tubes to support and protect ...

Houses built before World War I often have plaster walls and original knob-and-tube wiring, which was installed according to old, outdated electrical code that did not require electrical boxes for ...