From the category archives:

Electrical

What is Knob and Tube Wiring

January 27, 2010

By Alan Trauger
Knob and tube wiring was a system of open electrical conductors supported on ceramic knobs. It also used ceramic knobs where wires cross each other or pass through framing. This type of wiring was in common use from the 1880’s to 1930’s, in North America.
During the era when knob and tube was in [...]

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Aluminum Wiring Facts and Fallacies

January 27, 2010

By Alan Trauger
When first used in branch circuit wiring, aluminum wire was not installed any differently than copper. Due to increased copper costs in the mid 1960’s, aluminum wiring became more prevalent in wiring homes. It was known at the time that aluminum wire requires larger wire gauge than copper to carry the same current.
For [...]

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