generator sizing fundamentals 9
https://atomic-wiki.win/index.php/Dual-Fuel_Generators:_A_Practical_Look_at_Fuel_Flexibility
Generator sizing fundamentals start with understanding the total wattage of everything you want to power at once. You add up starting watts, which are higher for motors and compressors, and running watts for sustained loads. A common mistake is forgetting that surge power can be 3-7 times the running requirement for a few seconds. It's wise to oversize slightly for future needs, but not so much that the generator runs inefficiently under light load.