Gunner Asch wrote:

On Sat, 14 Jun 2008 23:21:20 -0500, Ignoramus20633
wrote:


If the heat losses are R*I^2, then the motor was producing (33/25)^2 =
1.74 times the heat that it was designed for, and turned more slowly
so it could not move as much air as it was designed to. That's why it
got so hot.

This leads me to believe that Wayne was right (as usual) and this is a
7.5 HP pump and not a 5 HP pump. It definitely needs a 7.5 HP motor,
or a slow 5 HP motor.

drop the pump pully 1" in diameter

Drop the pump pulley??? That would spin the pump faster and load the
already undersized motor more. Surely you meant to drop the motor pulley
size.