Plugs where one blade is wider than the other can be annoying, but they'll also keep you a lot safer. Here's why they're like that and how it works.

You find yourself in an airport or hotel room in another country, and you really need to charge your phone, camera or game system. But what is that strange-looking outlet? It has round holes! And ...

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 ...

If you've ever looked closely at an electrical plug, you've likely noticed that the ends of the prongs have little holes in them. While this is a leftover design element from early electrical systems, ...

In a nutshell, plugs and sockets differ from region to region and even country to country because, at the time they were being developed, no one really saw any reason to make them all the same. First, ...

If you've ever watched a movie or show from across the pond — or even traveled there yourself — then you'll probably have noticed that European electrical plugs are vastly different in appearance from ...