Updating knob and tube wiring Free nairobi chatting groups
Knob & tube wiring is a type of wiring which was in common use until the 1940′s and sometimes used as late as the 1950′s.The nick-name is derived from the ceramic knobs that are employed to insulate and secure the wiring runs and the ceramic tubes employed to protect the wires where they pass thru potentially abrasive materials (primarily wood joists, studs etc.) Unlike subsequent wiring systems where all the wires in a run are enclosed in a cable, the two wires (black/hot and white/neutral) run separately and only come together at a terminal (switch, receptacle, fixture, junction box etc.).Knob & tube wiring does not provide a third wire for grounding and is therefore considered unsafe in kitchens, bathrooms, laundry rooms and outdoors.
Knob and Tube wiring uses only two wires, a hot and a neutral, with no grounding wire.
One of these is an old type of electrical wiring known as Knob and Tube wiring.
With 35 years of experience working in these lovely older homes, Gibbons Electric has extensive knowledge of determining if your home has live Knob and Tube wiring and how best to rewire if you do.
This has become a more common issue in recent years as people are taking advantage of incentive programs to install insulation, as Knob and Tube wiring cannot be covered by insulation.
Insurance companies are also increasingly refusing to insure homes with this older wiring and requiring it be rewired prior to issuing a policy. If your home was built prior to 1950 chances are you may have Knob and Tube wiring.