Assuming the inverter is wired to the gridSo no neutral is required on the input side of inverter just a ground bonded to the neutral on the main panel and only there am I correct so far? Ok this inverter has a pass thru mode um where is the neutral coming from on the output if the inverter is not inverting but rather just passing thru .the inverter has another ground terminal on it I assume it is to case ground the battery enclosure? Ok so the subpanel has isolated neutral to ground where does the ground for the subpanel come from? They say some people know enough just to be dangerous but danger is id like to avoid when I hook this thing up. Any replies would be appreciated as the manual is no help and actually confusing