A typical North American electrical receptacle has three openings:
Two vertical slots for the electrical blades
A round or U-shaped opening for the grounding connection
Many people are accustomed to seeing the grounding hole at the bottom.
But electrical receptacles can often be installed with the grounding opening at the top instead.
That doesn’t automatically mean the receptacle is wired incorrectly.
The orientation of the physical outlet and the way it is electrically connected are separate issues.
Why Would an Electrician Install It That Way?
One common reason is safety
