Power companies have certainly been using aluminum wiring for decades for electrical transmission and power grids. <br /> <br />And transmission lines and other distribution applications were also used for underground applications. <br /> <br />However, you're probably asking the question when was it used in houses? <br /> <br />Well, the equivalent time as plenty of other properties in Canada and the United States, and very likely the world - throughout the years 1965 to about 1975. <br /> <br />And the explanation why aluminum wiring was made use of throughout that time period is just because the Vietnam War was driving the prices up of copper as a result of its consumption of it that home-builders had to search for another alternative metal in order to put branch circuitry into the residential properties that they were constructing to make it more inexpensive. <br /> <br />Home-builders back then touched base with the main aluminum companies who were already fabricating circuit wiring for major underground c
