So there I was busy working from home, and the power just went out.
Go check the two DBs and nothing is tripped on either, but there is a distinct burnt smell.
Inverter showing error 56 (battery circuit open), so I pop open the fuse box, and the negative is tripped. I open up the fuse holder and see the 100A is blown.
No high loads were happening at the time. Batteries were charging, normally by what I see in ICC, so I'm stumped as to what happened.
For the time being I've turned off the batteries and inverter, and running purely on grid, but before I go off and get a new fuse and fuse holder, I'd love it if anyone can give insight into what might have happened.
From what I can see, both batteries appear fine, as does the inverter, but I won't know till they are connected again, although ICC reported them as healthy so I'm hopeful.