Why does the US use 110v and the UK use 220v?
In: Engineering
US had power first and decided to use 110v which spread to its neighbors with the same plugs.
By the time power spread to the rest of the world, better safety measures and methods, including the outlet itself, became invented/realized, and so running a higher voltage wasn’t considered as hazardous.
It’d cost North America way too much to change over for no real gain, so it didn’t.
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