If your water pump motor nameplate is 2.2KW, then your small generator can run it. If the power of the water pump is 2.2KW, then the general efficiency of the 2.2KW water pump is about 78-85%. The engine power required is around 2.75KW, your generator is barely usable. If the power of your generator is not that great, it may be damaged.
Can small 3 kilowatt generators drive a 2.2 kilowatt water suction pump?
Introduction Can small 3 kilowatt generators drive a 2.2 kilowatt water suction pump? If your water pump motor nameplate is 2.2 kW, your small generator can drive it if the water pump horsepower is high.