Given that three-prong plugs are considered safer, you may be wondering why, 60 years after the introduction of three-prong outlets, some new appliances have two-prong plugs.

Some outlets are installed upside down, but the three prongs still serve the same purpose.Other outlets — especially older ones — only have two slots and can only fit two-prong plugs. Some ...

Not all electrical plugs in the US are the same. Some have grounding wires while others don't, and some have one of the top two prongs bigger than the other.

I recently bought a new home and it still has many old 2 prong outlets (built in 1948). When I use a circuit tester it shows the outlets are grounded. As you would assume, due to the age of the ...

You'll notice that not all electrical plugs are the same and might even have different inserts depending on the country. Here's how many there are.

Homes built before the 1960s had different electrical regulations than we do now—including the fact that two-prong outlets were standard, rather than the average three-prong ones we typically ...

Some large appliances need additional electrical current to function properly, so a 20-amp outlet is often necessary. The different shape of the slot means you can't accidentally plug high-power ...