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Mains is the general-purpose alternating current (AC) electric power supply. The term is not often used in the United States and Canada. In the US, mains power is referred to by a variety of formal and informal names, including household power, household electricity, domestic power, wall power, line power, AC power, city power, and grid power. In Canada, it is sometimes called hydro, because much of the Canadian electrical generating capacity is hydroelectric.

Also see


  1. See Wikipedia Mains electricity [1]

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