"A 20-a circuit is a code violation when the appliance it is designed for draws less than 16 amps. Add the required additional overcurrent protection, and it's no longer a '20-a' circuit."
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This interpretation reads backwards for me. I've always taken the position that a 20A branch circuit is suitable precisely when the utilization will be 80% and below.
UL listed appliances come with overload appropriate cords.
Small appliances also come with internal overload protection -- either inherent or as a component -- like a Klixon. (Common as dust inside appliances across the land, many flavors.)
Over current protection is to exist back at the panel for said 20A branch circuits.
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My 2 cents on vehicle collision damaged raceways is that there are no raceways that can 'take' vehicle collisions.
Even RMC/ GRC would be crushed by a lift truck.
Fork lifts are the reason bollards were invented, IMHO.
