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Subpanels are required to be bonded to ground per code in every instance. The bond is connected directly to the same grounding rod used for the main to prevent ground loops. When this is impractical then 50 feet of separation will ensure between ground rods will prevent ground loops.

I did stick three panels at 200 watts each with three tiny 20 amp chargers (pre-MPPT) two years ago to charge a battery an run a 2000 watt inverter in my trailer. Two years later working perfectly so I figured I might as well save $6000/year on utility and gasoline costs. It was a big jump so...

If anyone cares to help me double check my math and reasoning on usage I would super appreciate it (not just regular appreciate it): I am about to install this setup and hope someone can prove something wrong with my thinking, otherwise I will have to go ahead and do the labor to mount...

The inverters are independent of each other, each connected to it's own buss and each running off-grid to three independent circuits. One inverter for Car Charging, one for A/C and Electric Heat, and one for a subpanel.

Thank you for the reply, I am going to use 0000 between the buss bars and the same from the buss bars to each inverter as I am going for .25% voltage drop (power loss). Looks like that manual is gonna result in someone snapping terminals off of batteries of they start drawing for an 18 kw...

Thanks, that's what I thought. I had diagrammed mine before looking at the manual and when they sent me the wires to connect battery to battery and with secondary connections to allow both parallel to each other AND to a buss bar I was not sure what was what :D

Hello All! Setting up a basic 40 panel system with three separate 10 Kw inverters and (14) 5Kw batteries. The battery manual shows they can be set in parallel and the batteries themselves have two inputs each for positive and negative. The batteries came with 4 AWG cabling to connect each...