Grounding terminal

My EP500 Pro has a grounding terminal at the back near by the main switch.

The grounding terminal is not mentioned in manual…

In Questions about grounding, grid charging, firmware - #3 by BLUETTI it has been stated, that grounding is not needed…

What is exacly the function of this terminal? Has connection of the EP500 Pro to grounding any negative impact & no positive benefit to the device? Is this terminal realy useless??

Again my question, what exacly is the function of this grounding terminal???

Hi @SteCol , This port is for grounding and is used to connect the ground wire.