Westinghouse vs Duromax Generator Dual fuel technology: the capacity to run on either propane or gasoline provides fuel choice independence and flexibility. When the generator detects that the oil level is low, it immediately shuts down to protect your investment. Plenty of power: With 12,000 beginning watts and 9,500 operating watts, this unit can handle large loads such as lights, a refrigerator, and high-amperage power tools. Plug-and-Play: A Propane Regulator, Remote Start Key Fob, 12V Battery Charger, Oil, an Oil Funnel, a Tool Kit, Heat Resistant Plastic Wheels with Never-Flat Polyurethane Tires, and a User's Manual are included in the box to get you started right away (Minimal Assembly Required) The response is: I'm convinced that anyone who believes Toddd made a mistake by hiring a trained electrician is mistaken. According to you, what exactly is a "manual transfer switch"? It's only a manual breaker or switch that needs to be switched on. It's not a problem as long as the electrician followed the rules. In response to your question, I believe the outlet is a 50A RV outlet, as stated in the description. The outlet next to the transfer switch is this one. The transfer switch is a twist lock, but the RV outlet isn't; nonetheless, if you look at the photo, it's the one with four holes. It also has a voltage of 120/240 volts. Just a heads up. If you wish to do something to the device that isn't specifically stated in the instructions, such as "convert to run from LP Gas to Natural Gas," you should contact the manufacturer directly. Asking the general public for answers on something that is ONLY created and recommended to function with Gasoline/Propane is not a safe approach to acquire your answers. I'm not trying to be disrespectful, but it is a VERY good way to be wounded or break the unit, so if it entails attempting to change the way the equipment is supposed to work, I would recommend receiving your information directly from the manufacturer. Only gas; a separate propane tank gauge is required. However, I would not recommend this computer because it does not start in the cold, and the service and support are non-existent - avoid! I've used a lot of propane heaters, generators, and torches (big ones), and I can fairly say that lowering the pressure on the tank is the best technique to stop the frost. Getting a larger tank is the simplest and safest method to do this. If a 20-pound tank is icing severely, consider a 40-pound or even a 100-pound tank. Your icing issue will be resolved.