why are there different shapes of electric plugs around the world why isn’t there a universal one
In: Engineering
* Older electrical systems use lower voltage and higher current.
* Newer systems use higher voltage and lower current (for increased safety and other reasons).
* Upgrading older systems would be far too costly.
* Plugging equipment designed for the older systems into the newer systems could destroy that equipment and could start dangerous fires.
* Differently shaped plugs help to avoid that.
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