Do I need to ground the solar panel frames to the engine block?
There is a ground screw on the Victron MPPT charge controller, I assume I ground that to the engine block as well.
In the disconnect box between the panels and the controller, there is a ground lug. Even though there is just a pos. and a neg. running to the disconnect, do I have to ground the box as well? Can I run a wire from the panels, to the lug in the enclosure, to the MPPT and then the engine block?
So many questions....