German Lamps in the US *
Jenny and Mike, relatives of Lilly and Fred, live in the USA. Their grandmother has emigrated from Germany to the USA a long time ago.
While they had been rummaging around in their granny's attic, they had found an old light bulb with the inscription 60W/230V.
When they ask her, their granny tells them that the Germans had a supply voltage of 230V in their homes 230V, and that it wasn't 115V like in their home.
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...and I would like to answer the question.