Personally I think wire nuts on anything that vibrates as much as an RV going down the road are an accident looking for a place to happen. At least they used some tape on it though. To me crimp type connectors with insulating caps are way more reliable and the number of wires can only be what will fit within the actual crimp connector.
We had wires in our bedroom slide-out that were never connected. There are 2 receptacles next to the bed. Both wires ran into a 1900 box to the main feed. One was connected the other never stripped back just curled up. Also came across a couple wire nuts where exposed wire was sticking out a 1/2" and not secured to anything. Our land line cord fried a lug at the connection since it wasn't proper install and tightened, this could have been catastrophic!
Sounds like the electrical department needs some training and better quality checks.
2007 Georgetown 370TS
aka - RAYNMKR