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Seems like a regular US lightbulb would have worked in 1881: https://en.wikipedia.org/wiki/Edison_screw https://en.wikipedia.org/wiki/Edison_screw And unground
by avidiax 2y ago
Seems like a regular US lightbulb would have worked in 1881: https://en.wikipedia.org/wiki/Edison_screw https://en.wikipedia.org/wiki/Edison_screw
And ungrounded US sockets could have worked in the 1910's: https://www.plugsocketmuseum.nl/NorthAm3.html https://www.plugsocketmuseum.nl/NorthAm3.html
Definitely give the rest of PlugMuseum a look. There's tons of info there.