Updating electrical to 220 volt
You'll notice on the campground pedestal image below that there are four* breaker switches.
The down position should be "off" and the up position should be "on", but that's not always the case.
Your RV will be either a 30-Amp rig or a 50-Amp rig. The simplest method is to check the plug on your power cord.
If it is a large plug with three prongs, it is 30 amps.
Basically, you will have 50-amp potential, but your 30-amp main breaker in the RV should shut down if you try to use more than 30 amps. It's done all the time, but there are enough risks that OUR rule of thumb is to never plug into a power source rated higher than our rig. But we are on 30 amps at least 50 percent of the time and use our 50 to 30 amp adapter a lot. Now, with that said, if you are getting a rig for full-timing, it is our recommendation to get a 50 amp rig.
So let's start with the assumption that you will ALWAYS park where you can plug your rig into an electrical outlet. Every RV these days comes with a power cord meant to plug into a campground electrical pedestal like the one below.
You can then run appliances in your RV, but you will be limited to the 30 amps from the power source.
So you will have to manage which appliances you run at the same time.
The handles make it easier to disconnect and make this adapter worth the extra money in my opinion.
Your 50-amp cord plugs into the four-prong receptacle on the adapter and then the three-prong end of the adapter plugs into the 30 amp receptacle on the campground pedestal.
Also, you want to make sure that your appliances, especially the ones that draw the most electricity, are "off" when plugging in AND unplugging. Okay, so what if your RV is a 50 amp RV with a four-prong plug, but the campground doesn't have a 50 amp outlet?