the orientation can be intentional.
Another Reason: Identifying a Special Circuit
This is where things get especially interesting.
Sometimes an unusual receptacle orientation is used as a visual clue.
For example, in some installations, an electrician may use orientation to help identify a receptacle connected to a particular circuit or intended for a particular type of equipment.
The exact convention can vary by location, electrician, building, and electrical code.
So if you see one outlet upside down while every other outlet in the room looks normal, don’t automatically assume someone messed up.
It may have been done intentionally.
Upside-Down Outlets Can Appear in Commercial Buildings
Take a look around places such as:
Workshops
Hospitals
Laboratories
Commercial kitchens
Offices
Industrial facilities
Construction areas
Utility rooms
You may encounter receptacles installed in different orientations.
Commercial and industrial electrical installations often have specific conventions for identifying circuits, equipment, or special-purpose receptacles.
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