Knob and tube wiring

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Knob and tube wiring was one of the earliest ways to distribute electricity throughout a building.

Knob, tube, and splice

Knob supporting a corner

Knob supporting a splice

Knob supporting a long run of wire

Knob serving multiple functions

Ceramic tubes

Ceramic junction for light socket

Splice with modern power outlet

Knob and tube in a 1930 home
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