I would assume any built for the home would work in an RV. Should be designed to work on a standard 15A receptacle just like your trailer has. With that being said, if you are on 30A service, don't try to use any other appliances simultaneously. You should be able to run it with the AC on, but not AC and anything else like the microwave, a coffee pot, crock pot, etc. AC will likely pull around 15 amps, the toaster oven probably the same- so you are pretty much maxed out with those 2. Keep in mind that if you are using incandescent bulbs still, you will likely be pulling 10 amps or so there if you have most of the camper lights on. Consider the fridge as well if running on electricity. I am assuming water heater will be running on gas- if not, yet another thing to consider.