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 ...

The outlets that are familiar in Japan are the so-called '2-pin type', which has two protruding boards, but many people know that the shape of outlets in other countries is different from that of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. INDIANAPOLIS — Are you familiar with the ...

There are 15 standardized types of domestic electrical outlet plugs in use worldwide. The standard North American outlet, for example, has two vertical slots and a round hole beneath them for ...