If you're using a growatt 5000es (European model that I don't use in my videos) with an auto transformer, you need to watch this video. The output of the inverter bonds the ground and neutral, which is designed for use with European grid. Conversely, American grid uses center tap transformer to designate ground/neutral. This creates a massive safety hazard. You will have 120V on ground of the inverter, and this can kill you if you complete circuit to earth ground when input is connected to American grid. Or if there is a bypass situation, you will have a dead short and it will overload the inverter.
I know people are using these units to save money, but it's a bad idea. Also, the actual output of these transformers is pretty low. You are better off using a inverter that is designed for use with American grid.