Have you ever walked into an older home, hotel room, office, or workshop and noticed something that looked just a little… wrong?

The electrical outlet was upside down.

At first, you might think someone installed it incorrectly.

Maybe the electrician made a mistake. Maybe the person who renovated the room wasn’t paying attention.

But here’s the surprising part:

An electrical receptacle being installed “upside down” isn’t necessarily a mistake at all.

In fact, there are practical reasons why some outlets are installed with the grounding opening on top instead of

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the bottom.

Once you know what you’re looking at, you may start noticing these outlets everywhere!

So why are some wall outlets upside down? Is one direction safer? Is there actually a “correct” way to install one? And what does that little third hole actually do?

Let’s take a closer look.

First, What Does “Upside Down” Actually Mean?

When most people look at a standard North American electrical receptacle, they’re accustomed to seeing it installed with the two vertical openings on top and the rounded or U-shaped grounding opening underneath.

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