I’m going to assume that you’re also not going over that limit. Judging by the popular portable generators at present, it’s safe to say that most don’t exceed 10,000W. Typical Generator Sizes and Their Recommended Extension Cord Gauges Do’s and Don’ts of Using Extension Cords for Generators.
Factors to Keep in Mind to Determine the Right Gauge to Use.Typical Generator Sizes and Their Recommended Extension Cord Gauges.