pulled out and something
conductive accidentally falls against it.
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With the grounding opening on top, the grounding pin can potentially engage before the other plug contacts in certain situations.
There’s an important caveat here: the orientation of a standard receptacle is not, by itself, a substitute for proper electrical protection.
Circuit breakers, grounding, GFCI protection where required, and properly installed wiring are much more important to electrical safety.
Still, some electricians and homeowners prefer the grounding hole on top for this reason.
- It May Help Identify a Special Circuit
Here’s another explanation you may come across.
Some electricians use receptacle orientation as a visual clue. Construction& Maintenance
For example, an upside-down receptacle may indicate that the outlet is connected to a particular type of circuit, such as a switched receptacle or another circuit with a special function.
That
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