Originally Posted by
David Kumm
Did you verify the amp draw with Grizzly? Their 5 hp motor draws 22.4 amps and I've never seen a 3 hp even close to that in draw. The 15.5" impeller is large but likely the filter restriction keeps the cfm down as well as the amps. The impeller design must either have less depth or have a different curve or it would burn out the motor if a true 3 hp and used with 8" pipe. The specs show about 500 cfm less at 2" than the 5 hp 16" unit and the max SP is about the same so it may be that the 3hp is mislabeled rather than the amp draw. Dave