An adapter (dog bone) lets you connect a 50-amp RV to a 30-amp supply or 30-amp to a 50-amp, or to connect to a household outlet 30-amp to 15-amp 110V. Always be cautious of power limits.
To use a dogbone adapter for your RV electrical system, first identify the amperage of your RV’s shore power cord and the amperage of the power pedestal you’re connecting to. A dogbone adapter is a short, heavy-duty cord with two different electrical connectors at each end, designed to step down or step up the connection to match the available power source.
For example, if your RV has a 50-amp shore power cord but the campground pedestal only offers a 30-amp outlet, you would use a 50-amp male (NEMA 14-50P) to 30-amp female (NEMA TT-30R) dogbone adapter. Connect the 30-amp female end to your RV’s power cord, then plug the 50-amp male end into the campground’s 30-amp pedestal. The adapter contains a jumper wire inside the 50-amp outlet that connects both hot legs, allowing the single 120-volt leg from the 30-amp pedestal to power both legs of your 50-amp RV system.
If you have a 30-amp RV and need to connect to a standard 15-amp household outlet, use a 15-amp male (NEMA 5-15P) to 30-amp female (NEMA TT-30R) dogbone adapter. Plug the 30-amp female end into your RV’s cord and the 15-amp male end into the household outlet.
Always ensure the adapter is in good condition before use, and turn off the power at the pedestal and your RV before connecting. The adapter’s PowerGrip handle helps safely grip and plug in the female end without straining the connection. Remember, when using a lower-amperage adapter, you must manage your electrical load—do not run multiple high-draw appliances simultaneously, as this can trip the circuit breaker.