behaving strangely, don’t treat the orientation as the problem. Those are reasons to stop using it and have the electrical installation inspected.
How Can You Tell If an Outlet Is Wired Correctly?
You can’t reliably determine everything about an outlet just by looking at it.
A receptacle can look perfectly normal while having an electrical problem behind the wall.
Simple plug-in receptacle testers can identify some common wiring issues, but they don’t replace a professional inspection and don’t detect every possible electrical hazard.
If you’re unsure about an outlet—or especially if you notice heat, burning smells, buzzing, sparks, repeated tripping, or visible damage—it’s best to have it evaluated by a qualified electrician.
A Few Other Outlet Details You May Have Wondered About
Once you start looking at outlets, you’ll notice that they’re full of little design details!
Why Are There Two Vertical Slots?
The two vertical openings correspond to the current-carrying conductors in a standard North American receptacle.
One is the hot connection and the other is the neutral connection.
What’s the Little Round Hole For?
That’s the grounding connection.
The grounding system provides a path intended to help protect against electrical shock under certain fault conditions.
