Originally Posted By: dfrend
This post was automatically imported from our archived forum.
Was doing some consulting work for a contractor friend the other day. The house had what we thought was knob and tube. The electrician out there said it does appear to be knob and tube, but they used stranded fixture wire and not the solid cable used for knob and tube. I have never come accross knob and tube before.
The electrical system was determined to be a mess. There was bx tied into the knob and tube. Knob and tube wiring went down the walls to outlets which appeared to be wired with more modern means but the knoba nd tube was live. And the electrician was unable to find where the source of the power to the knob and tube came from. There was bx and romex coming from the panel installed in 1983. But somewhere between the cellar and attic it became knob and tube.
Anyhow, the question is: can attic insulation be added somehow with the knob and tube wiring? If so, what is acceptable?