There is no safe magical wiring diagram to connect a Growatt to the grid because SigSolar " ... do not want to be liable for any situations." and of course, Growatt couldn't care less. Service after the sale was the main reason I purchased from a 'reputable' US based retailer and not from a less expensive Asian seller.Every one of the Posts you have had about issues is a new post made by a new customer who is having an issue that most of us already know about already. Please stop trying to shove the blame on someone else. If you guys fixed the problems these posts would not exist.
You have the Growatt people who are still waiting on the magical wiring Diagram that is recommended by Signature Solar for Grid use. The last I heard was that you are not willing to release one for fear of liability. Then you have some sort of major Issue with the EG4 Lifepower4 battery. It cannot handle any significant sudden load without tripping. The post by people who are stacking 6 of them together is not much of a comfort to the person who only owns one or two of the batteries. Here is a new one from Yesterday: 2x EG4 Tripping With Magnum 4K
This problem does not happen with the EG4LL but it has it's own set of problems that revolve around a really bad cell balancing system and cells that are of questionable quality. Then we have the 6500EX which has these error 61 problems and sometimes seems to just burn up.
And lastly you guys create most of your own issues because your so focused on selling Products and you don't seem to care about the misleading information you are feeding public. You made it very clear at the launch of the 6500EX that it was not going to have any issue passing inspection because it was UL1741 Listed. After Tons of orders were made by unsuspecting customers we learn that it has no special certification, it just the same document used by the LV6548 for years. It is these kinds of actions that create a Tsunami of negative thread and then you really are going to come on here and play innocent and say you are the victims?
Robby, I have not made up my mind if they persist on the forums for the free PR, or to 'beta test' their wares on the consumer.