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Mains Elecricity
Created by
Leo
⟶ Updated 8 Oct 2018 ⟶
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Events
(1881)Worlds first AC public electricity supply (water wheel driven)
(1882)Worlds first large-scale DC central plant (steam powered)
(4 sep 1882)Large "Pearl Street Station" was finished, runnings on steam power and supplying DC. It was run on the "safe 110 volts".
(1885)AC systems appeared across the US with 110 voltage, which was considered safe
(1 sep 1939)World War 2
(2 sep 1945)Voltage in US becomes 117 volts but US lagged behind
(1976) Nominal voltage rose to 120 volts
