Knob and Tube Wiring in Toronto & GTA

If you’re the owner of an older home, or if you’re planning to buy one, you may already know that some older homes have knob and tube wiring – a wiring method used in residential homes in the early 1900s to 1940s.take a look in the basement. If you notice wires running through porcelain cylinders or “tubes” inserted in holes in the wooden floor joists, you have knob and tube wiring. You’ll also see porcelain “knobs,” which keep the wires secure, and prevent them from touching the wood along which the wires run. The wires are usually insulated with a rubberized cloth fabric.

Knob and tube wiring is no longer installed and you may be surprised to find out that many insurers will not provide or renew coverage on homes with this type of wiring as they consider it to be a higher risk., Some insurance companies even require a total replacement of knob and tube wiring prior to providing insurance coverage.

If your home has knob and tube wiring, the Electrical Safety Authority (ESA) recommends you have a Licensed Electrical Contractor check the “knob and tube” conductors in your existing installations for signs of deterioration or damage; or arrange to get a general electrical inspection. This is different than a home inspection because it is focused solely on the electrical. Based on the electrical inspection and/or review by a Licensed Electrical Contractor, it might be recommended that you replace the wiring to ensure the safety of you and your family.

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