What works and doesn’t work when I’m not plugged into a campsite?

There are 2 power systems in RVs:

• 12v system runs off of the batteries; 12v powers things like:
  • lights,
  • water pump,
  • bathroom vents,
  • HVAC thermostat,
  • furnace brains + blower fan,
  • 12v fridge or 2-way fridges,
  • slides,
  • and electric stabilizers/leveling system
• 120v system comes from the campsite power (or generator or inverters); 120v items are your:
  • regular outlets,
  • microwave,
  • air conditioners,
  • residential refrigerators,
  • most TVs, etc.

When not connected to shore power, you need to use a generator or inverter to make 120v power.