50 Amp RV Power Cords, Extension Cords and Accessories

What length 50 amp RV extension cord do I need?

Most RV owners choose between 15, 25, 30, and 50 foot lengths. A 25 foot cord handles the majority of campground pedestal-to-rig distances, while 50 foot runs give you flexibility at sites where the power post sits further back. Match the cord gauge to the run: 50 amp service at 120/240V uses 6/3 + 8/1 STW cable on quality cords to limit voltage drop over longer distances.

Will a 50 amp extension cord work with my 30 amp RV?

Not directly. A 50 amp cord uses a four-prong NEMA 14-50 connector, while 30 amp RVs use a three-prong TT-30 plug. To bridge the two you need a dogbone adapter. See our RV plug adapters collection for 50A to 30A and 30A to 50A options that let you connect to whichever pedestal is available at your site.

Do these 50 amp cords protect my RV from power surges?

Extension cords carry power but do not condition it. For surge and miswire protection at the pedestal you need a dedicated surge protector or EMS unit rated for 50 amp service. Pair your cord with a hardwired or portable EMS, and browse related RV electronics for surge protectors, voltage monitors, and converters that round out a safe shore power setup.

What accessories should I buy with a 50 amp power cord?

A standard kit includes the cord itself, a twist-lock or straight-blade replacement plug end if yours is damaged, a cord storage reel or strap, and at least one adapter for 30 amp or 15 amp pedestals. Many owners also add a weatherproof cord cover at the pedestal connection. If your existing plug end is cracked or burned, replacement male and female ends are available in this collection.