The generator may be out of fuel. Typically the generator draws its fuel from the same fuel tank as the the engine for the RV. It has a shorter pick up tube so it cannot run you out of gas. The pickup tube will lose its draw when your tank is somewhere around 1/4 full.
Could also be a clogged fuel filter. Check oil level in the generator it may have a low il cut off.
Assume you have a 30 amp rig.
When using the generator one end of the power cord goes to the generator and the other end goes to the RV receptacle, when using shore power one end of the power cord goes to the pedestal (30 amp outlet) the other ends goes to the RV receptacle.
Check the breakers on the pedestal and in the RV.
Caution, 30 amp outlets in your house will typically be 240 volts, the RV requires 120 volts. Plugging in to a dryer, welder, etc... 30 amp circuit will fry your RV electrical system.
US Navy Vet, Liberty Tree Member of Oath Keepers, NRA & VFW Life Member, Alaska EMT.
2009 Safari Cheetah 40 SKQ
2009 Winnebago Chalet 231CR