# Electrical plugs question

**URL:** <https://boards.straightdope.com/t/electrical-plugs-question/151396>\
**Category:** Factual Questions\
**Created:** [January 28, 2003, 2:35am UTC](https://boards.straightdope.com/t/electrical-plugs-question/151396 "2003-01-28T02:35:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![insider](https://avatars.discourse-cdn.com/v4/letter/i/bbe5ce/32.png) [@insider](https://boards.straightdope.com/u/insider)\
**Post date:** [January 28, 2003, 2:35am UTC](https://boards.straightdope.com/t/electrical-plugs-question/151396/1 "2003-01-28T02:35:17Z")

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Why are there little holes in each prong of an electrical plug?

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**Author:** ![J\_String](https://avatars.discourse-cdn.com/v4/letter/j/ce73a5/32.png) [@J\_String](https://boards.straightdope.com/u/J_String)\
**Post date:** [January 28, 2003, 2:40am UTC](https://boards.straightdope.com/t/electrical-plugs-question/151396/2 "2003-01-28T02:40:55Z")

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[http://www.straightdope.com/classics/a2\_389.html](http://www.straightdope.com/classics/a2_389.html)