Your RV is designed for 50A service the outlet can only provide 30A. This can cause dangerous shocks and shorts. Yes, you can find an adapter for this purpose. It’s not a great idea to plug your 50A RV into an antiquated 10-30R plug. But again, there’s no ground! – just a neutral. For 50A RVs: Yes, With CaveatsĪ 10-30R outlet, as I said, supplies dual 120V/240V power. However, if you don’t need to run your dryer anymore, you could replace your double-pole circuit breaker with a single-pole breaker and install a new TT-30R receptacle, marking one of the old hot legs with tape to signify ground. Plugging your 30A RV into a 240V outlet will short your equipment, at best. Yes, they make adapters from TT-30 to 10-30. “But an adapter could fix that, right?”Īn adapter doesn’t fix the intrinsic problem: Your NEMA 10-30R 30A dryer outlet is wired for 240V service. “The only difference is the ground contact shape,” you muse. It’s those pesky NEMA 10-30R receptacles that cause all the problems! Because if you haven’t already noticed, they look awfully similar to your RV power pedestal receptacle: a NEMA TT-30R. For more information, read this post on a surprising difference between 30A and 50A power!.Anyway, 5th wheels, motorhomes, and large travel trailers typically use 50A 120/240V split-phase electrical service. That enables a Big Rig to use up to 12,000 watts of power, compared to just 3,600 watts for a 30A RV!Īs you can see on this list of RV appliance amp draw, you can run many more appliances at the same time with a 50A 120/240-volt power supply! But by using splitting the legs of 240V service, you can get 100A at 120V rather than 50A at 240V. As I explained in my article comparing 30A to 50A RV power service, the Big Rigs still use 120V circuits. Which is good! That’s how all common dryer outlets are wired, too.ĥ0A RV service is kinda confusing. Unlike a 30A RV, your 50A motorhome or 5th wheel runs off 240V service. That’s not directly compatible with ANY dryer outlet. Imagine water flooding a broken dam: That’s what happens to “fried” electrical equipment.Īnyways, smaller RVs and campers (without multiple air conditioners) commonly use 30A 120V single-phase electrical service. Here’s the big takeaway: Higher voltages can “fry” equipment not rated for such pressure! Electricity can literally arc across contacts, spark between wires, and burn holes through insulation. Within your breaker box, some circuits (such as for your dryer and oven) are 240 volts, and the rest are split into 120 volts. The transformer on the power pole down the street drops the line voltage down to 240 volts, which is tied into your home’s circuit breaker box. As you’ll see in a minute, that’s a major compatibility problem with dryer outlets.įor reference, power lines near your house are typically at 13,800 volts. Volts, in layman’s terms, measure electrical pressure. A smaller RV travel trailer usually runs off 30A 120-volt power.
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