Hybrid LV 6048 inverter "IN" and "OUT" markings should not be mis-connected. What does this mean?

[timselectric]

Agree: When a Single AIO produces L1,L2,N with one unit, and multiple units are described as parallel by the manual only to increase output capacity (Voltronics example MPP6048)
Vs Creating the split phase using at least two AIO units and adjusting the settings such that the two units (or more) together create 120-N-120 (Voltronics example MPP 6548) in the settings the user can select for example 120-degree angle for 208V 3P or 180-degree angle for 120-240.

This depends on if the AIO's are high frequency or low frequency.
A single low frequency unit creates the split-phase on the secondary side of a transformer, with a center tap.
A single high frequency split-phase unit is actually two inverters in one enclosure.
Split-phase is created the same way as two separate units.

 

[ImAnIdiotPleaseBePatient]

What an excellent video. Never really understood why L1 and L2 were not called 2-phase before.

 

[timselectric]

What an excellent video. Never really understood why L1 and L2 were not called 2-phase before.

That guy really explains things very simply.
Much better than I ever could.

 

[Adam De Lay]

That guy really explains things very simply.
Much better than I ever could.

I've seen quite a few of his videos and he really simplifies things to make them easy enough for even someone like me to understand.