Hi time2roll,
The limitation is the shore power cords. I have an OEM 30, a 20, and a 15 amp.
My 50 amp "break out box" (which includes breakers) has a 30 amp outlet on one leg, and twin 20 amp outlets on the other leg. It means it is unbalanced to some extent.
My peak load is about 7000 watts, but with heaters cycling on and off it varies between 3000 and 4500 watts.
Voltage @ 4500 watts is 108. I did consider using the Sola Basic on the 30 amp leg to boost the voltage. It is interesting to see how the twin 20 amp leg "drags down" the voltage on the 30 amp leg.
Wattage is not calculated but is a reading from the watt meter.