Why Some Wall Outlets Are Installed Upside Down

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

There’s more to discover. Continue to the next page for the rest of this article.