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eacheach avatar image

Grounding MPPT 100/30

Does the unit need to be grounded via the chassis ground screw on the side in an RV application?

Grounding
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Glen avatar image

What about a van solar system that is completely isolated from the vehicle electrics. My conversion 12v circuits all take positive from a common bus, all negative returns go to a common bus connected to house batteries. Nothing is connected electrically to the van chassis/body. Should the controller frame ground be connected to the negative busbar?

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Guy Stewart (Victron Community Manager) avatar image

It will operate without grounding. However it is advised to ground the unit via the ground screw.

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On a boat, which has the battery neg connected to 'ground' (engine, keel etc.), I suppose it's ok just to connect the ground screw to the negative battery terminal?

Richard Cohen avatar image

@eacheach

I have a unit in the rear of mt 4 x4 , and use a grounding wire to the chassis.

This seem to work well, I also disconnect the MPPT from both solar and battery before using a 250v charger to boost batteries. Not sure if I need to do this but play safe


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