We were not allowed to do this -- you get into a gray area with some of this stuff because the ability to put a plug on a wire can get you into trouble.

Its a different situation than a direct wired appliance when you are following a manufactures instructions. For most homeowners this is encountered with the A/C condenser where you can see 25amps on a 40amp breaker.

We would have needed to upgrade the wire to the appliance or provide protection with a flexible cover (Like the outside A/C plastic whip) -- this would have not been practical and at the time I believe you could only go six feet. We could also have put in a fused switch.

The concern in this case was the possible damage to the feeder cable after the plug -- that was not designed/ approved for the amps. This was even with a thermal protected motor.

In many countries they have fused plugs that protect downstream cords -- like the fuses in our Christmas light plugs. They need to do this because the volts/ amps are higher at the outlets then in the US.