What Is Knob and Tube and Why You Need to Replace It

Knob and tube, also known as open wires, is considered not safe to the point where many insurance companies will not insure the property. In fact, if you are planning to make any additions in your house wiring system, this type of house wiring is considered a violation of today’s electrical building codes. Major concern is missing grounding wire, impossible to install GFCI outlets and outdated layout of plugs, switches etc.

ON Energy is a licensed and insured electrical contractor who has done a lot of rewiring for houses with knob and tube wiring.

Most homes that were built in the 1900’s to the late 1940’s and didn’t have major electrical rewiring have knob and tube wiring. It is estimated that approximately 350,000 homes were built in Ontario with knob & tube wiring during that time. If the knob and tube wiring remains unchanged or has been carefully maintained  by a licensed electricians, this wiring method could still be safe, but unfortunately this is rarely the case. While the wiring ages and deteriorates, porcelain knobs and tubes can break up, old wires sag and fray, and the sheathing falls off, exposing the live wires. Despite damage done by aging, most problems with knob and tube wiring are caused by tampering and alterations made to the original system by handymen or inexperienced home owner. If you add to this scenario the unsafe practice of using contemporary appliance cords in order to make them compatible with the old and outdated 2 prong power plugs, use of extension cords and power bars, household insulation installed over the wires, you may have a potentially serious fire hazard.

What Is the Best Solution for Knob and Tube Wiring?

Removing knob and tube wiring and replacing the entire system to meet Canadian Electrical Safety Code standards is the best solution.

Installing a new electrical service and panel that provides for the needs of today’s household electricity usage and also allows for any potential future additions or renovations, addresses the problem of blown fuses, overloaded circuits, and other safety concerns.

At ON Energy, we offer professional and safe knob and tube rewiring services to our clients in Toronto and GTA. Removing knob and tube wiring will keep your electrical system safe and prevent it from being overloaded, preventing a potential fire hazard.