A trailer fire beside the house would have been bad news...
Glad you controlled it.
I often wonder if a fire suppression system in the electrical room wouldn't be a worthy project.
DC amps are happy to flow to the earth until everything is welded, melted, on fire or all of the above...
I just bought a vintage truck camper for fun - seller had a pristine healthy fully charged grp 31 deep cycle looking at me, direct wired with no fusing whatsoever to an inverter in a garment closet between the bed and the door....