I have a BSS 2813 2019 model. On my last trip had a power outage to the coach and traced it to the genny transfer relay panel. Anyone who has this coach (or similar) may want to pop the cover and take a look. A bad connection on the neutral line caused the meltdown of the feedthrough connector. Fell apart in my hands when I found it. Smoke coming out of the compartment when it happened.
Luckily I had a large wire nut and was able to splice the wires together. Seems when it was manufactured there is a stranded wire and solid wire just connected together in the feedthrough. This is the main neutral line for the coach. Probably on the stranded wire only half of the strands were in the feedthrough.
I am out of warranty and out of luck but the wire nut is probably a better connection anyways. Other wires seem to be intact and have a solid connection.
I am posting this so others are aware and may want to inspect their transfer relay panel. Just pop the cover off and look inside to check the connections for any indication of overheating (discoloration).