Have you ever wondered why power plugs have the shape they do? The common American Type A design dates back to the original 1920’s two-pin plug design. Why are we still using 1920’s technology to power electric devices when virtually every other household technology has experienced rapid change and evolution?
It turns out that everything about electric wiring is strictly controlled by the National Electric Code, a national standard that is reissued every three years or so, but has changed so little, that aside from various safety devices, my dad’s 1960’s code book is virtually the same as his new one. Many, perhaps most, electricians are content with the standard 120V/60Hz/15amp 3-prong socket, but I would beg to differ.
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