Robatoy wrote:

756 watts per HP @ 100% efficiency. Most electrical motors run around
90% or so.

I think that's a bit optimistic. Baldor's "premium efficiency" 3HP
motor gives 85% efficiency and 96% power factor.

Their more typical 3HP motor gives 78% efficiency and 85% power factor
for a total efficiency of around 66%.

Chris

On Sep 11, 1:29*pm, Chris Friesen wrote:
Robatoy wrote:
756 watts per HP @ 100% efficiency. Most electrical motors run around
90% or so.

I think that's a bit optimistic. *Baldor's "premium efficiency" 3HP
motor gives 85% efficiency and 96% power factor.

Their more typical 3HP motor gives 78% efficiency and 85% power factor
for a total efficiency of around 66%.

Chris

I allocated 1000 watts for 1 HP. Close enough for giggles.

Hell, I have 6.5 HP vacuum which draws 10A!! How is THAT for
efficiency, eh? G

Robatoy wrote:

Hell, I have 6.5 HP vacuum which draws 10A!! How is THAT for
efficiency, eh? G

With a K&N, that bad boy might do _10HP_! G