The holes on the prongs of your electrical plugs may look random, but there's a clear reason they were created and why they ...

Not all outlet holes are the same, and there's a reason for that. The shapes (vertical slots, round holes, T-slots, etc.) correspond to specific electrical functions and safety features. Take the ...

close up of Type A plug prongs - Gabriel Lopez/Shutterstock If you've ever stared at the holes in an electrical plug and wondered why they exist, you're not alone. Like an industrial-age kōan, the ...

If you've just moved into an older house, you may have realized some or all of the electrical outlets don't look like you're used to. If you have any two-prong outlets in your home, it's important to ...

We use plugs every day, but most of us don't spend a lot of time thinking about them. We know that there are various electrical plug types, even if we're not familiar with the ins and outs of all of ...