[header] How to choose a generator [title] Work out the maximum power level that you will require. [step] This is done by adding up the maximum required power for each of the electricals that you will need the generator to power. Then, make sure that the generator's power rating at least matches this figure. 
[substeps] You can find the wattage information in your appliance's owner's manual, or on the id plate located on the body of the machine. Make sure to consider both starting and running wattages.