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In North American residential construction, aluminum wire was used for wiring entire houses for a short time from the 1960s to the mid-1970s during a period of high copper prices. Electrical devices (outlets, switches, lighting, fans, etc.) at the time were not designed with the particular properties of the aluminum wire being used in mind, and ...
Elsewedy Electric: 14,000 1.1 Bambach Wires & Cables: 12,000 1.1 References This page was last edited on 26 ...
In both those instances the white wire should be identified as being hot, usually with black tape inside junction boxes. The neutral wire is identified by gray or white insulated wire, perhaps using stripes or markings. With lamp cord wire the ribbed wire is the neutral, and the smooth wire is the hot. NEC 2008 400.22(f) allows surface marking ...
The first rubber-insulated cables for US building wiring were introduced in 1922 with US patent 1458803, Burley, Harry & Rooney, Henry, "Insulated electric wire", issued 1923-06-12, assigned to Boston Insulated Wire and Cable . These were two or more solid copper electrical wires with rubber insulation, plus woven cotton cloth over each ...
The market for aluminium building wire today is mostly confined to larger gauge sizes used in supply circuits. [27] Electrical wiring codes give the allowable current rating for standard sizes of conductors. The current rating of a conductor varies depending on the size, allowable maximum temperature, and the operating environment of the conductor.
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