Picking a generator is easy if you know what you’re powering. Match the output...

https://web-wiki.win/index.php/What_is_the_Difference_Between_Running_Watts_and_Starting_Watts%3F_A_Tradie%E2%80%99s_Guide_to_Generator_Basics

Picking a generator is easy if you know what you’re powering. Match the output to your tools to save fuel. Choose an inverter if you need it quiet and always check for RCD safety switches