Originally Posted by wjbite
FOUR HORSE POWER
When a motor is advertised as "3000 watts", that is usually the highest input power it can tolerate for a brief time. Under these conditions, its efficiency is likely to be about 50%, giving an output power of 1500w.
If the motor is now run with a reduced load, so that continuous operation is possible with no overheating, its output power will probably be no more than 750w. Its efficiency will now be about 75%, and its input power about 1000w.
ONE HORSE POWER