I have a Mercer 5 kva inverter.a 16kva ss kipor generator.could not get the inverter to take power from the geni.untill i changed setting for ups to apl (appliance).also changed battery charge setting to solar and utility.seems to work ok now.the inverter will accept a wider imput voltage on apl then on ups guess there is a "voltage lag"with geni as its AVR adjusts for demand