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Richard J Kinch Richard J Kinch is offline
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Default why are there holes in electric plug prongs?

*alan* writes:

Do the holes in the prongs of an electric plug serve any purpose?


Also if the device being powered is shorted, when you insert the plug into
an outlet, the narrower conductor around the hole tends to melt off (pow!)
before you can insert the plug all the way. I don't know that this is by
design, but it is a beneficial aspect.