Pauluk:
What you mentioned about the 3KW heater in the 5A circuit reminds me of the neighbour across the street... Although not electrical in nature, the guy figured he is lowering his water bill by only having the main shutoff to his house open 1/4 of the way! Not the "brightest lamp in the chandelier" eh?

NJwirenut: Don't forget those air compressors you can buy that have a
"5 Horsepower" motor on them but still manage to plug into a standard NEMA 5-15 Receptacle... Must be " Metric H.P" [Linked Image]

A.D