Is a 1000 watt generator enough to run a 1 hp well pump?
Take Amps times the volts to get Watts
115x15= 1725
120x15=1800 or
125x15=1875
(These are different voltages found in houses) i would go with
the max of 125 volts and 1875 Watts so go for a 2000 watt (2kW)
generator.