Here is a link that most preppers may find useful. Every device with a motor should have
LOCKED ROTOR CODE LETTERS.
This is the "inrush" values which can be significantly higher than the wattage required to run the motor. You can visualize this with a garden hose analogy. When you first turn the water on, you have to fill up the hose first with water before you can begin watering.
This is useful for both generator sizing and inverters. Specifically if you have a deep well in the range of 3/4HP. You will need to size up in order to handle the starting wattage.
Hope this is helpful.