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Hi, I am installing an MPPT100/30 Smart Solar charge controller to a small camper trailer. There is no 'earth' as such in the existing wiring as the battery bank of two 100 a/h deep cycles is wired direct to common positive and negative busses. Is it necessary to connect the body of the controller to the negative post of one of the batteries?
The body of the controler should be connected to the Frame of the camper trailer, or its earthing connection
> the body of the controler should be connected
How would one do that? There is no dedicated port or marking for the ground on the controller, so this is a bit of a mystery. My MPPT 75/15 controller has a metal back and the lack of dedicated space does seem to indicate it should not be used as the one end of the ground wire. I would guess the ground should be connected to one of the terminals, not sure which.
