2014 Georgetown 328 Generator/Wiring Issues

[JDEthan]

When we arrived at our campsite, the Onan 5.5 gennie was running fine. After about 30 minutes it started surging, the air conditioner shut off and I shut down the gennie. No time until we returned home to check into the issue. No power on generator L1 at the transfer switch. L2 had power. I checked the circuit breakers (2 30 amp) at the gennie, had continuity. Checked continuity from circuit breakers to transfer switch, had no continuity on L1. I then started tracing wiring from gennie. In the compartment next to the gennie there is a junction box. Located inside the box are the connections between the gennie and the transfer switch. What I found is one connection that had melted the wirenut and welded to the junction box cover. Tomorrow I'm going to electrical supply house to get some waterproof wirenuts. The pictures show the resulting damage. The circuit breakers DID NOT go off.