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If so, I'm intending on interrupting that circuit from the smart battery protect to the input terminal on the inverter with a Shelly1 WiFi switch, which will give me the ability to turn the inverter on and off via the Shelly app on my phone.
Yes, that should be fine.
The Victron diagram shows a small inline fuse to prevent a short circuit on that skinny wire making it catch fire. You could move your wire to the far side of your mini fuse block to achieve the same thing.
I think my system needs more panel
It's only going to get worse as winter goes on. Keeping that wifi router going 24/7 on a week of January gloom seems ambitious.
grams
Dammit
A wiring question:
Having read the manual and discovered that my initial setup was "strictly forbidden" I have corrected it, and the inverter is now wired direct from the battery rather than via the smart battery protect.
The wiring diagram I posted upthread shows this configuration as the correct one.
What it also shows is taking a circuit from the "out" pole of the smart battery protect and connecting it to one of the pair of contacts on the inverter that can have a switch connected to them.
These two contacts are bridged with a short length of wire, as supplied by Victron.
My assumption is that there's a low voltage present on the right hand terminal, which is supplied to the left hand terminal via the loop of wire, and the presence of +ve on the left hand terminal indicates to the Inverter that it should run.
Which, therefore, means that when a circuit that carries a live signal from the battery is supplied to the left hand terminal (even though it's not coming from the right hand terminal) the inverter sees a positive current on the left hand terminal and is operational.
If and when the smart battery protect shuts off the live feed (the "out" pole that the circuit to the switch on the inverter is connected to) then the inverter stops seeing a positive current on the left hand terminal, and turns off.
Does that sound accurate so far?
If so, I'm intending on interrupting that circuit from the smart battery protect to the input terminal on the inverter with a Shelly1 WiFi switch, which will give me the ability to turn the inverter on and off via the Shelly app on my phone.
If not, then I really don't understand this stuff.