Can I use the HG7 on a generator power source or is this strictly for use on utility power?

You can use the HG7 on generator power; however it is more critical to size the device properly. If the non-linear load represents a great portion of the total generator load and the drive is very lightly loaded, the filter capacitance may cause the generator to experience voltage regulation issues. Contact TCI Technical Support for a system evaluation. You may also contact the generator provider for their guidelines on the use of harmonic mitigation and capacitive equipment on their systems.