"AAvK" wrote in message
news:R35gf.3572$dv.270@fed1read02...

Contrary to popular belief, small motors are not rated by output
horsepower.
They are rated by input horsepower, how much power they consume. This, of
course, allows variation of actual output according to motor efficiency
but,
for reasonable quality motors of the same type, there is not a lot of
efficiency difference. Volts * amps / 746


Alright, volts (#) times amps (#) divided by 746 equals actual horsepower?


No to both. Power consumption is one way of rating. So many watts.
Doesn't tell how well they are converted to energy.

Power output another. Some go with "developed" HP, which is pretty
optimistic.

What's on the nameplate is generally pretty good.

This a good thing to read.
http://www.iprocessmart.com/leeson/l..._reference.htm