Diy updating knob and tube
Why not spend 0 or less and replace your bathtub and shower fixtures?
If your bathtub/shower has old fixtures that leak, are rusty, peeling, or are discolored, it is time to remove and replace them.
RENEW YOUR BATHTUB SHOWER BY SIMPLY REPLACING THE FIXTURES AT A LOW COSTFind the bathtub/shower fixtures that will fit your bathtub/shower (Search Amazon).
K&T is more heat resistant than the equivalent modern wire, because the conductors are separated by an air gap.
The ceramic tubes mean that even if the insulation deteriorates it creates no fire hazard.
It is important to check: For more on insurance issues see: True Knob & Tube Danger: Modern Rework The danger with K&T is that somebody messed with it. This particular instance created a big spark some years later as the grounded metal cable hit the now bare wire.
Original K&T installers never let the wires touch except protected by ceramic tubes.