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bill-shackelford avatar image
bill-shackelford asked

SmartSolar MPPT 100V 15 amp grounding questions

1. On the underside of the controller I see a screw with a lock washer, is that the ground for this device?

2. What gauge wire should I use? The rest of the system will be 10AWG. So 10AWG?

3. This is going into a travel trailer. The chassis ground of my trailer is hooked directly to the negative terminal of my battery. Would I just attach the controller ground directly to my battery negative terminal too?

Thanks!

MPPT Controllerssmart solar set-up helpGrounding
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1 Answer
wkirby avatar image
wkirby answered ·

You could use 12AWG since this is only designed to carry fault current until your circuit protection opens up, but yu already have some 10AWG, so you could just use that.
Bond to the metal of the trailler at a point nearby.

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