I'm currently remodeling my 1876 home. Some upgrades have been made by just adding new breakers and wiring, but I've come to a room that runs its power through the old knob and tube wiring. I am going to install all new wire, fixtures, etc.

The old knob and tube system also powers the two rooms next to the one I'm currently remodeling. Can I cut the old wire and cap it off with a wire nut and tape until I can remove the remaining live knob and tube wiring in the house?

  • Knob-and-tube wiring actually meets code, believe it or not.. In some cases it's even better than Romex, as rodents chewing on Romex have actually caused house fires. Jan 1, 2019 at 21:59

1 Answer 1


Sure you can but you must make sure that the ends that you cap off are still accessible if there is any chance they may become active (hot). I would recommend you cut back to a place such as an attic and make them safe from there.

Happy New Year.

  • This ^^, but don't be surprised if touching a little bit of knob and tube leads to outages elsewhere. You might be lucky enough to have circuits isolated to only a couple of rooms, but I wouldn't bet any money on it. Jan 1, 2019 at 18:06

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