Where is it written that Nameplates will not be used. Have you ever seen a SPL rated motor on a compressor? Those are usually 5 HP and rated to be on a 20 amp circuit. If you look at the same table the load is over 20 amps. I have seen even a 6hp version. These SPL motors are used on compressors and only operate at peak for a short time. I bet your inspector will fail that one also.