These Mysterious Home Features Used To Serve A Purpose Centuries Ago

Copper Wires And Tubes On The Ceiling

Some homeowners may see several wires stretching across their walls and ceilings. These are knob-and-tube wiring, an old method of electrical wiring that was common from the 1880s through the early 1940s.

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Copper wires were protected by porcelain and nailed down with porcelain knob insulators.Although knob-and-tube wiring did the job, it had a high cost of installation compared to modern power cables. Currently, knob-and-tube installations are not permitted in the United States except in specific situations. If you’re lucky, you’ll stumble across a building that still has it.

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