Electrical – Defective Products and Conditions

Knob-and-Tube Wiring

Knob-and-Tube Wiring

Knob-and-Tube Wiring. A Brief History Knob-and-Tube Wiring systems was an early standardized method of electrical wiring in buildings. Its common use was in North America from about 1880 to the early 1940s. It consists of single-insulated copper conductors that run within wall or ceiling cavities, passing through joist and stud drill-holes via protective porcelain insulating …

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Zinsco Panel

Zinsco/Sylvania Electrical Panels

A brief history of Zinsco/Sylvania Electrical Panels Zinsco Panel Sylvania Panel The Zinsco brand was established in 1943 when the son of the Zinsmeyer Company took over his father’s electrical business. Zinsco panels went on to be a very popular brand of electrical panels for several decades, often labeled with the name “Magnatrip” on the …

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Single Strand Aluminum Conductors, solid state aluminum wiring, solid state aluminum conductors

Single Strand Aluminum Wire

the history and description of single strand aluminum conductors           Since approximately 1965 and 1973, single strand aluminium conductors [single strand aluminum wires], or a.k.a. – solid state aluminum wiring [solid state aluminum conductors] was sometimes substituted for copper branch-circuit wiring in residential electrical systems due to the sudden escalating price …

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