2 HP versus 3 HP DC Input Needed

[Wade Lippman]

Okay, now that the OP's question is thoroughly answered, I have a related question.
The grizzly 3hp cyclone and the 5hp cyclone both draw 22a! The 5hp is 16" versus 15.5", and double the filter area, so shouldn't it draw more current?
I have measured the 3hp at 22a, so that is accurate; I can only presume the 22a is accurate for the 5hp as well.

My only guess is that the 3hp motor is just horribly inefficient; but why would they do that?

[Chris Padilla]

While you've stated a few important design specs on the two cyclone DCs, we don't have everything. What's the intake size of the two blowers? That will tell us the area there for air to move through. Assuming it is different, there you go. If it is the same, then the difference might be coming from the the different size of the impellers not to mention the actual design of the impeller's vanes (how many, angle, geometry, etc.). Also, are the cyclones the same? Lots to look at and compare/contrast.