120 volt electrical plugs

[Dawg]

On newer 120 volt plugs there is a "lip" around the end that meets up to the receptacle. Older plugs did not have this lip.

Just wondering if anyone knows what the first year they began doing this?

Thanx.

[FreeApplianceRepair]

Interesting question,
I have never noticed before.
I don't have a answer for you, but I'm wondering why you want to know.



John@FreeApplianceRepair.com

https://www.FreeApplianceRepair.com