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I rarely would need to go over 5000w with one multiplus ii, but when i do need more power, could a second multiplus ii be wired into the generator input to add more wattage when needed, but not consume idle power when not needed, this should reduce ide power to only one inverter but allow for twice the power when needed. is this possible?
I do want to clarify what you are asking here.
You want to power assist the generator output to provide more input power to an inverter that is running a load?
Are you planning on having a second battery bank?
Can be done, but when there is more than one source of energy to charge the battery, the battery monitor internal to the "main" inverter/charger will not correctly track the battery's condition. If the battery does not have a BMS, add a SmartShunt and Cerbo GX to the system.
Yes, if you connect the backup MP to the ACin from the regular MP, the backup would be seen like a genset but make sure, that the output voltage of the backup is 2-5V higher then the standard one
