Safety (and Sanity) Check on RV System

[poqirax]

This is using a Multiplus 12/300 120x2, 2 distributors, a smart shunt (500A), and a 100/50 MPPT (400W solar on roof of the rv currently).

I would use the distributor as a busbar with fuses since the wattcycle needs over current protection (?) connected to a shunt and battery shutoff, then to another distributor with the MPPT (probably will add more later) and the Multiplus attached. The Multipluss will then be wired into the system replacing the current inverter and including the AC and such to it. In my mind, this makes sense, but I also am a complete novice. I have looked at some similar diagrams and this uses a lot of the same mentality, just relying on the distributors as busbars (supposed to be better?) instead of wiring all the batteries together for the parallel system.

I looked at the power in with the T fuses, but I figured using the distributor as a power in with mega fuses is essentially the same thing. I would also have 300A fuses in both distributors.

I am open to any and all ideas, criticism, etc. I also am really bad at making wiring diagrams.

 

[scrubjaysnest]

Did mine a little different. 350 amp T fuse at each battery for OCP. That's ~1.25 times the current rating on Windy Nation 2 AWG wire I used between T fuse and buss bar. Each battery connection at the bus bar has a 125 amp MRBF fuse. 6 AWG wire from the 100/50 through 60 amp breaker to the buss bar. 50 amp breaker between bus bar and DC distribution panel via 6AWG wire. 4/0 cable from bus bar to inverter, mine is 3000 watt, and 300 amp breaker.

The 100/50 really likes 700 watts + of panels at 80 to 85 volts.