why are there different shapes of electric plugs around the world why isn’t there a universal one
In: Engineering
As with many things that have different [standards](https://xkcd.com/927/), different people come up with different ideas independently. Then someone says “There are too many different plugs. I’m going to make a new one that everyone will use.” Now there’s just an extra standard.
However, the different plugs also act as a safety feature since the different countries have different voltages and frequencies of electricity. Different plugs means you can’t put one device into something designed for another. Why these different voltages? See paragraph 1.
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