The answer to 'generator power surge' is that a power surge can be caused by a variety of issues with the generator, including faulty wiring, overloading, or a problem with the generator's voltage regulator. Symptoms may include flickering or dimming lights, damaged appliances, or the generator shutting down unexpectedly.
In many cases, a power surge can be resolved by a homeowner through basic troubleshooting and maintenance. However, if the issue persists or you are not comfortable working with electrical systems, it is best to call a licensed and experienced electrician to diagnose and repair the problem.