- 1987, an amendment to the National Electric Code (NEC) prohibited the placement of insulation in contact with knob-and-tube wiring.
- Knob and Tube was not designed to buried insulation and must be able to dissipate heat.
- Knob and Tube Wiring was initially designed to carry only 10 amps modern homes now typical carry twice that per circuit which increases the chances of an overloaded circuit.
- Knob and tube wiring cotton insulation becomes brittle over the years I exposing the copper core this is a fire and electrical shock hazard. 5. Most insurance companies will not provide coverage for home with knob and tube wiring.
- You cannot ground it to the plumbing system. This is an outdated method. Most plumbing materials now are made of polymers that will not ground a circuit. #chattanoogarealtors #chattanoogarealestate #electrical #electrician
- Get a home an inspection before purchasing a property to insure the wiring is safe and in proper working condition.
