Growatt SPF 3000TL LVM - Three Phase Parallel (4 Units) & Split Phase Parallel Intro; Three Phase Parallel Wiring: Four Inverters in One Phase; Split Phase Parallel Wiring: One Inverter per Phase

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Two inverters in two phases and only one inverter for the remaining phase:
Power Connection
Communication Connection
Three inverters in one phase and only one inverter for the remaining two phases:
Power Connection
Communication Connection