Just a couple of comments.
Wiring a 600V DC System is very different that wiring low voltage Ethernet wiring.
SunnyBoy is a brand of SMA which is a very good inverter. The new SunnyBoy's are made in the US. The new SunnyBoy 3000,3800.4000,5000 & 6000TL_US-22 are dual MPPT, have very low...