Matching wire length from FlexBoss to Gridboss?

[RBull]

I am getting ready to make the connections between 1 GridBOSS, 3 FlexBOSS21s, and 4 EG4 Outdoor wall mount batteries. I noticed the following line in the FlexBoss manual:
"When installing multiple inverters in parallel, it is recommended to use equal length AC cables from each inverter to the main panel and from each inverter to the loads panel. This helps ensure the load sharing between each inverter is as even as possible."

How important is this? Because of the spacing of the batteries, that would be quite a bit of 2AWG wire coiled up in the conduit boxes. If I use the length for the furthest FlexBOSS then the next furthest would be 3-1/2 feet and the closest would have about 7 feet of excess wire.

 

[DIYrich]

It is a "recommendation". I wouldn't worry about 3 feet of wire. Technically it is wire resistance you want to balance. You can upside the longer wire to get a similar resistance.

 

[RBull]

It is a "recommendation". I wouldn't worry about 3 feet of wire. Technically it is wire resistance you want to balance. You can upside the longer wire to get a similar resistance.

I guessed it was a resistance issue. The difference between the furthest and the closest would be about 7 feet of extra wire at the closest inverter. Would that still be ok and not to worry about it?

I'm assuming that auto correct got you when you said upside the wire and you meant upsize. I have already pulled the wire, 2AWG for all 3 inverters to the GridBOSS.

I really appreciate your advice. You guys know far more about this stuff than I and I do want to do it right (or better than right).