2022 Winnebago Minnie Solar Upgrade

[Nomadic1]

The original solar equipment in my Winnebago Minnie 27" travel trailer included
one 190 watt solar panel
30 amp pwm charge controller
small deep cycle 12 volt battery

The Upgrade
adding two 190 watt panels for a total of three, wired in parallel for 570 watts of solar around 28 amps
Renogy dc/dc with mppt 50 amp
Renogy 2000 watt inverter
two Chins 12 volt 280ah lithium batteries for 560ah wired in parallel
1/0 Gauge for battery and inverter connections
4 Gauge for most other

Think I have most of this figured out, but my knowledge is limited to my YouTube studies and Will Prowse's book.
A couple of questions remain
Do I need a 300 or 600 amp fuse going to the inverter?
Can I hook up the original ac/dc box for the trailer direct from my bus bars
Thinking to disconnect the trickle charger in the original box and use a 25 amp dedicated lithium charger when I'm plugged in.

Have all the parts, will be doing the installation over the next 6 weeks or so. Leaving for 12 week Alaska trip in July, 50-60% boon docking

Looking for thought and or suggestions, Thanks David

 

[MisterSandals]

adding two 190 watt panels for a total of three, wired in parallel for 570 watts of solar around 28 amps

Why are you wiring in parallel? Is the existing wire 10AWG?

Renogy dc/dc with mppt 50 amp

Not he best choice. Separate SCC and DC-DC will work much better with fewer limitations.

1/0 Gauge for battery and inverter connections

No enough to handle a 2000W inverter fully.
1/0 Good for 150A with 75C wire

2000W / 10V cutoff / .85 efficiency = 235A

Do I need a 300 or 600 amp fuse going to the inverter?

You need MUCH bigger wire for those fuses. The fuse is supposed to blow before the wire.

I feel like this is a partial list.

 

[Nomadic1]

Thanks, I did a little more research, Renogy supplied 1/0 wire for the inverter connection. Recommendations point to using 2/0 wire as a safer choice and a 200-250 amp fuse. Yes I have 10 gauge wire running down for the solar connection.
I don't expect to use that much max power we will use a hair dryer, coffee pot and microwave spairingly. Most everything else is 12 volt.