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We hooked up 4 EG4 6500 inverters, along with 8 PV strings and 2 EG4 battery racks. 3 of the inverters were working, along with the batteries, PV input, and AC output. When we turned on the last inverter, we heard a pop and then everything shut down. I have been trying to test the other...

For now, I am avoiding the last inverter. I am currently trying to troubleshoot inverter 1 and 2 as split phase (2P1 and 2P2). Inverter 1 is EG4 and Inverter 2 is USE. I am using the gray parallel cable but no current sharing cable. How do I go about precharging the inverters? I am...