I have a friend who just bout a new Winnebago Class C. He said in order to put the slide out the ignition has to be on or the engine has to be running? I did not question it because I have never had...
The slide out motor(s) pull more power than the coach batteries are designed to handle. They're more for handling the house power needs. Running the slide out on batteries only may trigger a fault and require a reset. Run the generator or plug in and there won't be any problem.