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Orion Tr Smart 12-30 and Phoenix 800 - Common Minus/Negative

Hi all

Fairly new to Victron equipment and absolutely very much appreciate the quality of what I’ve seen so far. I’m just embarking on a new project and this one includes an Orion TR Smart (isolated) charger plus a Phoenix Inverter.

My question relates to the negative/minus wiring arrangement. Since this installation will be vehicle-mounted with chassis as battery negative, should both the input and out of the Orion (negatives) be common with the system side of the setup?

Or would you common all of the system side (from the Orion, leisure battery, accessories etc) back to the leisure battery negative and not the chassis?

thanks for any tips or advice

Phoenix Inverterorion-tr smartwiring
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