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The standard voltage and frequency of alternating current (AC) electricity used in homes varies from country to country throughout the world. Typically, either-volt AC (V) or-volt AC (V) voltages are used. Also, most countries useHz ( Hertz or cycles per second) as the AC frequency. Only a handful useHz. The standard in the United States isV andHz AC electricity. However, due to fluctuations, the average measured voltage is VAC.
