Knob-and-tube wiring can be found in homes from the early 1930's and older. It gets its name from the cloth wrapped hot and neutral wires that travel separately and use white porcelain knobs and tubes ...

Buying a home with knob and tube wiring? You should be concerned with the safety of the wiring and the insurability of the home. I'll discuss both in this post, but first, some background. Knob and ...

All these things can be major fire hazards. Add in the potential for deterioration due to age (sagging wires, fraying or crumbling insulation around the conductors, etc.), and some insurance companies ...

Q: You have written that it is not possible to insulate over older knob-and-tube wiring in walls and attics. Many states have adopted amendments to NEC 324.4 to allow for exactly this practice. The ...