> However, I have seen many 2-pin (ungrounded) outlets in my travels
> around the United States. Did I imagine these?

2-pin yes, but not ungrounded.  These were the norm until the 1960s(?) when
all new house outlets had to be 3-pin.  There are still many in houses that
were built before this requirement.  My mother's house was built in the late
1950s or early 1960s and all original outlets were 2-pin but new ones added
since then are 3-pin.  My house was built in 1985 and is all 3-pin.

My office is in a building originally built in 1880 (before electrons were
invented) and there are some very strange looking power outlets that I've
never seen anywhere else in a few places.  Fortunately none of these seem to
be live.


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