>>105878574
wireless ground our new technology!
>>105879918
during the electrification of the country in the XX century, government didn't endorse a single voltage letting the companies do as they please, the american companies installed 110/60hz and the euro companies 220/60hz.
>some insight on the blue zone
all the houses in the blue zone have 220v too, they are provided in a 2 fase scheme to power certain electronics while 110v is meant to power most devices.
>about japan
its 100v 50/60hz, its not really a mess in comparassion, but they ended up with that because of similar things.