I'm a Newbie to RV . I have a 2000 Georgie Boy Landau . The 50 am cord is hard wire on one end and on the other is plugged in an electrical box inside the storage bay. I did pull this out and plugged...
There is normally a junction box to convert from the cable to interior wiring of the rig. In your case they have mounted a power inlet receptacle in this box. Don't get confused with the transfer switch box. That box has relays that isolate the genset from the shore power.