I have found that using the Solar configuration to monitor the generator transfer panel is much more useful. That allows you to see the total power consumed at primary utility panel while simultaneously seeing the power at the transfer panel. This will let you know how much power the generator needs to provide before power goes out. You can determine if your generator is properly sized. Knowing how long your generator is running can easily be determined by seeing that the power at the main panel is zero during a power outage.
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