But how is it different?
Unplugging and then plugging back in is 'normal use'...a power outage/restoration while device remains plugged is not normal use and the test we would want to ensure it will operate without reset.
But isn't it basically the same?
Scenario 1
Unplug device for 1 minute. plug back in
Scenario 2
One minute power outage - power comes back on
Don't both equal no power for the same amount of time? Isn't removing a fuse the same as un-plugging or flipping the switch if it's on a power strip? Sorry, I'm confused.

Yeah, it might well be...but if testing for the situation we dread, cold chicks, I'd feel more comfortable with flipping breaker on and off than just unplugging and plugging back in.
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