Diy updating knob and tub
4) Older electrical systems didn’t carry high ampacity loads and these extra loads cause the insulation to become brittle, exposing bare wire and the capacity to overheat which can cause fires.
5) Older systems that use knob and tube wiring also use two-prong receptacles, restricting the use of small kitchen appliances.
The attic and basement are not the only places knob and tube wiring can appear.
Electrical wiring is hidden in the walls and ceilings of most houses and buildings, and you won’t be able to detect what type of wiring is hidden from view.
But why is it so dangerous that nobody wants to insure it?
Is it something we should fear ourselves if our homes already have this type of wiring?
There are ways to fix this without rewiring your entire building which would be very expensive.
Then go down into your basement and look for the same thing.
In the basement, the wiring is often below the floorboards above.
If your home was built in the late 1800’s to early 1900’s there’s a good chance you do have this type of electrical wiring since it was considered state-of-the-art back then.
Most houses built during that time period do indeed have knob and tube wiring that should be replaced.