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You could but I am not sure that would be code compliant. The separately derived system examples I have seen use a separate ground rod close to the generator. Since the primary purpose is for lightning protection, the general goal is to have the shortest length and lowest impedance possible...

Grounding via the EGC is more convenient and practically safe per @Maquis. It's certainly a path to ground for lightning strikes. But it's not code compliant so it appears to fall short of your meaning of the "proper" way. The NEC sections cited in the manual is pretty clear about what's...

Wouldn't be simpler to just tell the Powerwall to disconnect from the grid for the hour or so when necessary?

Only CT will be supported initially. The special UWC version/mode for bidirectional power transfer will only support Tesla PowerShare vehicles via proprietary comms/controls. Regular charging (single direction power transfer) for third-party vehicles should still work.

The standard Tesla Universal Wall Charger has nothing to do with solar or backup power. All leading solar/home battery systems are proprietary including Tesla. In general, they do not support integration with third-party systems. It's a great way to lock customers in. Not sure how committed...

Grid-tied solar cannot work directly with conventional fossil or eletric fuel generators (e.g. Pro Power). Unless you can guarantee load consumption will be greater than solar power at all times, the Pro Power will shut off the moment it sees excess solar power backfeed. For better...

I think you meant "neutral" transfer switch.

Thanks for the clarification. BTW, most portable generators don't work as you described as they have floating neutral and when connected to house wiring via an interlock or transfer switch it's perfectly code compliant.

That's understandable for your own system. However, would you violate code on someone else's (e.g. a paying customer) system if you are liable even though you think it's safe?

I agree that it appears that more than few electricians think it's "safe" to disconnect the ground but it's still a code violation. I wonder if these electricians would keep the same opinion if they are responsible for any negative consequences due to the code violation.

For 120/240V service, the utility provides 2 hots and 1 neutral. My understanding is that the meter collar switch does not connect the truck ground to the house ground so no GFCI faults. I was a bit surprised when I learned it does not violate code since the switch is on the utility service side.

Tell the electrician you need to connect a "separately derived system" generator in a way that is compliant with your local building codes and any permit/inspection requirements.

200A service capacity doesn't mean much. Your actual consumption is likely much lower. Typical home base usage is <5A. You should take an inventory of the load requirements in your house for a more meaningful analysis. Also, it's typical to limit usage of large loads in some way when on...

If seamless means fully automated then it's doubtful. Also, not sure what the expectation is for such setup in terms of vendor support, but it would not be surprising if neither Ford/SunRun or Tesla would provide support if things don't work.

You also need to make sure the solar system is isolated from the truck power. The simplest setup for you is probably to put in a transfer switch between the grid/solar and power from the truck ProPower outlet. The setup will also allow you to manually switch over to ProPower anytime you want it.

Yep

You are confusing AC and DC power. HIS runs on DC power from the truck. The FCSP is used for comms/signaling between the truck and HIS but it's not used for actual power conversion when pulling DC power from the truck. The HIS inverter (Delta) determines the amount of AC power converted from...

That welder is inverter based. GFCI nuisance trip is likely the culprit even if you don't get an alert stating so.

Yes, Pro Power and Level 2 charging can both run at the same time with some caveats. You need to start charging before starting Pro Power because Pro Power stops whenever the EVSE plug is connected. Similarly, if you disconnect the EVSE plug then Pro Power will also stop. More limitations...

Fridge inverters are much smaller and less problematic for GFCI. Large inverter appliances like HVAC, induction ranges, large microwaves are more problematic.