Take the generator integration certification training course to unlock this feature in the enphase installer app. The 480 gen would work but you may need to over size it for the heavy single phase load Ideagen inphase will provide frontline professionals with an unprecedented level of efficiency and efficacy in compliance, audit and risk management
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Used by healthcare, fire and rescue, local authorities and housing associations, its out of the box, easy to implement suite of apps provide everything needed for oversight, reporting and improvement.
Not really the answer to your question, but why not use a single phase 120/240 v generator via appropriate transfer switch etc
