PV to chassis earth?

I’m about to swap out my CTEK DS250SE as I have upgraded to LiFePo4 and I don’t like the charging profile for Lithium. On this setup the PV -ve and battery -ve go to chassis ground so are common

So I’m going for Orion TR DC-DC and Smart Solar MPPT. My question is - it looks like the PV -ve and output -ve are common despite having 2 connections - so am I able to still have common pv-ve and common output/battery -ve wire - it will save me a hell of a lot of stripping out wiring!

The battery negative and PV negative are internally connected in the MPPT controller. If you have battery negative and PV negative to chassis you will need a chassis or battery negative to the MPPT negative.

1 Like