I'm planning to install a 3kVA Multiplus II with some solar PV running ESS and want to better understand how the system will work when grid power is available.
- I have been advised that the max power that can be supplied to the backup loads on AC1 is 2400W even when the grid is available. Is that correct? My understanding of this scenario is that the limiting factor is the 32A transfer switch which would imply a 7680VA limit when running 240V?
- How are high startup loads on AC1 handled when grid is available? We have a water pump I would like to have on the backup circuit - the inverter and batteries could take the full startup load - but I would prefer that the initial high current be pulled from the grid when available to reduce wear on the inverter and batteries. Is that possible?
- Does the Multiplus combine the output from the inverter and grid to power the backup loads or does it switch distinctly between the two? For example, if I had a 4000W load on AC1 would this all be supplied from the grid, or would the inverter provide the first 2400W and balance of 1600W would come from the grid?