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jan 1, 1883 - Edison patents a three-wire distribution system.
Description:
It allowed two 110V conductors to connect to a neutral one to make 220V.
Added to timeline:
Events Leading to 120V Decision in the US
By
Ethan Yang
11 Oct 2018
0
0
817
Date:
jan 1, 1883
Now
~ 142 years ago
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