ECN Forum Forums General Topics of the Trade General Discussion Area generator calculation

EE said: "A 15KW model will run the basics using a sub panel and a 100 amp ATS."

Keep in mind that the transfer switch must be rated for the full rating of the utility, regardless of the generator output.

If you have a 200-amp service, you must use a 200-amp transfer switch, even if the generator is only 5KW.