And this is where I continually learn. Voltage is critical to an electric circuit, the amps is load driven, thus a device can only pull as many amps as it's load is designed. A short to ground (fault) is a design meant to handle ALL amps it could be fed, and is very good at consuming it.
The inverter is a special beast, that I recognize. Its goal is to reach its max output power (Volts/Amps) in watts. It juggles volts and amps to reach that point.
The bigger question is something we all acknowledge but don't like to admit that there are inverters in the market that don't do what they should. They are not to what we constitute quality design even from well known manufacturers. That's the rub, that's the hesitation.
There are some inverters that say 360v@15amps=5100watts output. However, won't they don't tell you is if you place a load on the inverter of 10,000 watts, the inverter will either try to grab more volts or amps well above the input limit to try to meet the load and go poof. These are fixed inverters, no smarts, no limits. So if you provide 100amps to the input, the inverter will grab all 100amps,*volts and try to output the watts *IF* there is a load demanding it.
My batteries come in next week, the rest of my circuit arrives this weekend. I reached out to Huawei but given the current political landscape, I doubt I'll get a reply. I'll have a quick disconnect in my circuit, a 20amp fuse inline to the inverter along with measuring devices at each critical part of my circuit. I'll hook it up, throw the lever, and see how things go boom.
Translated into a plumbing analogy. (how my Electrical Engineering prof explained it)
Volts are pressure, Amps are volume.
Too much pressure on a valve or pipe, and they will fail. (burst)
You can have all the volume you want, but without pressure, the water won't move. (like a lake)
You can have high pressure and low volume and do work. (like a power washer)
Or, have high volume at lower pressure and do the same work (buckets of water)
(an explanation of P = IV)
The same pressure is behind all the taps in your house, and as long as that pressure doesn't exceed the ratings of the pipes/fittings/valves, you won't have any leaks.
Likewise, you can open a faucet a little bit to wet your toothbrush, or lot to fill a bathtub.
You are limited by the maximum flow rate from the water source. (pressure x volume)
If you pull too much volume, pressure will drop.
Back to electrical,
You have a certain voltage (pressure) on a circuit. If that voltage doesn't exceed the ratings of the components of that circuit, it wont 'Leak' across things that it shouldn't, causing magic smoke.
Likewise the circuit will only pull the amount of watts it requires to do its job. Whether its a 15w phone charger or a 1500w hairdryer.
Or a 3000w MPPT SCC.
As long as the Voc doesn't exceed the max input voltage of the equipment, the panels can't push the power into the SCC or AIO, anymore than your ability to control the tap to brush your teeth is determined by whether you have a 1/2 inch watermain or a 3inch.
Overpanelling is fine, as long as the Voc is within limit.
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