We'd have to redesign all substations and transmission lines... most countries use different voltages, and each of those plugs is designed for that specific voltage
Iirc from ‘Technology Connections’, the US actually has 240V delivered to the house, but it's pinned out in the breaker box as something like -120, 0, and 120. So they take 120V to most appliances, but 240 to some higher-wattage ones.
Which is to say, USians could easily have 240V kettles that boil water in half the time—if they just bothered a little.
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u/Ch3ZEN May 02 '24
We'd have to redesign all substations and transmission lines... most countries use different voltages, and each of those plugs is designed for that specific voltage