From my reading the power sharing documentation it seems like it would work identical to the Gen2, just different implementation. In a gen2 if you had one direct wired wall connector and wanted to add a second you would do the following: Interrupt the circuit and set a junction box. Inside that box you would basically split the wire and connect a second set of wires that go to your second wall connector. You would than run a signal wire between the two chargers, set the jumper on the first charger to the max amperage and than set the second one to slave.
The way I'm reading the Gen3 wall connector you could still do the same thing if you wanted except you wouldn't need to wire the signal wire. You would than go on the app and set the max charge rate for each connector as the max circuit capacity and also set the max charge rate for the group of connectors the same way. IMO if would be easier to add a second Gen3 wall connector since there is no signal wire.
My preference would still be a dedicated home-run to the panel for the second charger but I know this isn't always practical. You could still set a max rate for the pair of chargers as to not overload the available power for the residence.
Depending if they implement priority charging or not you could do the above wiring method, wire both with the same wire gauge (since they would be ultimately connected to the same over-current protection (breaker) but set one max charge lower than the other so that the power wouldn't be shared evenly but would give more power to a specified charger.
The way I'm reading the Gen3 wall connector you could still do the same thing if you wanted except you wouldn't need to wire the signal wire. You would than go on the app and set the max charge rate for each connector as the max circuit capacity and also set the max charge rate for the group of connectors the same way. IMO if would be easier to add a second Gen3 wall connector since there is no signal wire.
My preference would still be a dedicated home-run to the panel for the second charger but I know this isn't always practical. You could still set a max rate for the pair of chargers as to not overload the available power for the residence.
Depending if they implement priority charging or not you could do the above wiring method, wire both with the same wire gauge (since they would be ultimately connected to the same over-current protection (breaker) but set one max charge lower than the other so that the power wouldn't be shared evenly but would give more power to a specified charger.