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Knob and Tube Replacement

Many older homes are still wired using the antiquated – and dangerous – “knob and tube” method. Do not hesitate to call Raynor Electric if your home is wired in this fashion, because that wiring needs to be replaced in order for your home to be in compliance with the local electrical code.

Information on Knob and Tube Wiring

From the 1880s until the 1930s, knob and tube wiring was the method of choice. Even 20 years later, this method was still being used in many homes. Back in the late 19th and early 20th centuries, knob and tube was a good option because there were, of course, not that many electrical appliances.

In the knob and tube method, electricians soldered wires together and spliced them inside walls, without the use of junction boxes. They then wrapped the wires with electrical tape. Wiring was wrapped in cloth and rubber, covered with copper, and porcelain knobs were nailed to wood joists and studs. Porcelain tubes, with conductors inside, were inserted in holes. The wiring never touched wood structures or plaster inside a home, so the heat caused by overloads dissipated in the air space between rafters and partitions.

The Importance of Replacing Knob and Tube Wiring

Over time, however, these conductors can become dry, or even bare, as their installation crumbles away. This crumbling gradually occurs due to excessive current flowing through the conductors, or when short-circuits occur. The more power demanded by electronics and appliances, the more these conductors will deteriorate. When that happens, the risk of an electrical fire skyrockets.

What to Expect During Your Knob and Tube Replacement

When you call Raynor Electric, to remove your knob and tube wiring, our electrician will probably have to cut a hole in your ceiling to take out the old wires and run the new ones. You won’t have to worry, however, because we’ll quickly repair those holes.

Call us today if you would like to learn more about how we can make your home’s electrical system safe and efficient.