Let’s learn how to install a 30A outlet (receptacle is the correct word, actually) for an RV at your house.

I should begin this guide with a few words of caution, though. This is strictly a high-level overview of the process. It takes a skilled DIYer or an electrician to do it properly, and there are hundreds of code requirements that must be followed.

• If you can install a 50A receptacle, do it! There’s no harm in going bigger. And the more work the installation requires, the more true this is. If you plan to install a post-mounted RV power pedestal in your backyard, then it would be foolish not to install a 50A receptacle. Going back later to re-trench and re-wire would be more work than just installing a new outlet!
• Codes vary by locality! Yes, most localities have adopted the National Electric Code (NEC). But Authorities Having Jurisdiction (AHJ’s) may add their own restrictions. Ensure you’re following all your local codes and standards.
• If you hire an electrician, confirm they understand a TT-30 RV outlet is wired as single-pole 120V and NOT double-pole split-phase 120/240V! This is a common mistake made by household electricians. It’s a good way to fry your RV.
• Actually, you should hire an electrician. Electricity is dangerous, and when you modify your home, you’re potentially affecting your neighbors and the next homeowners as well.

Why Should I Install a 30A RV Outlet?

With a standard household exterior outlet, you are limited to 20A (sometimes 15A) of power. With 20 amps, you cannot run many RV air conditioners (not without a SoftStart, anyway). And you are limited to a single large appliance at a time. If you try to operate the microwave and the A/C at once, you will likely trip the household circuit breaker.