derek the solarboi on Nostr: Given how the functional inverter is at a way higher isolation value in general, this ...

Given how the functional inverter is at a way higher isolation value in general, this makes me think it's an internal fault to the inverter. If you want to check for sure, you can try swapping strings between inverters, patching a known good string to the suspected bad inverter, like this: https://www.tiktok.com/t/ZPRoQ2WVm/