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1 янв 1883 г. - Edison patents a three-wire distribution system.
Описание:
It allowed two 110V conductors to connect to a neutral one to make 220V.
Добавлено на ленту времени:
Events Leading to 120V Decision in the US
By
Ethan Yang
11 окт 2018
0
0
817
Дата:
1 янв 1883 г.
Сейчас
~ 142 г назад
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