Cummins ONAN generators are onboard power solutions designed to supply electricity to motorhomes and travel trailers when shore power is unavailable. These generators provide 120V AC power, similar to what you’d get from a campground hookup, allowing you to run essential appliances while boondocking or traveling.
An onboard generator ensures you have access to power when parked in remote areas, during travel stops, or in case of a power outage. They are ideal for:
Some RV appliances will not function without the generator (or shore power), including:
✅ Air Conditioners (typically require 2,000+ watts to start)
✅ Microwaves & Convection Ovens
✅ Electric Water Heaters (if no propane option is available)
✅ Residential Refrigerators (some models require AC power, while others use propane)
✅ Washer/Dryer Units
✅ 110V Outlets for household devices
While lights, water pumps, and propane-powered refrigerators run on 12V DC power from your RV’s battery, larger appliances need 120V AC power, which your ONAN generator provides.