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NOVEMBER 2, 2022

Knob and Tube wiring

If you have knob and tube wiring in your house, you may not need to replace it before adding an EV charger!

When knob & tube was the go-to electrical wiring, homes required a main distribution panel where the knob & tube setup consisted of a large capacity wire that was "fed" into the home and broken down into "branch circuits." The original electrician working on your house would have likely installed a fuse-type panel, as the compact-style modern breaker was unavailable then.

Pictured below: Knob and tube wiring in an older home.

Knob and tube wiring

In our modern world, it's common practice to replace any older fuse panels with modern breakers, especially when a home is sold or remodeled.

With this replacement, all-new "branch circuits" are installed in the new panel with a modern style breaker at their distribution point. Even after replacement, the old knob & tube wiring still resides in the walls - coexisting with your home's upgraded main distribution system.

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