A transformer for connecting a 50 A RV normally wired for 110 volts of electricity to foreign receptacles providing 220 volts of electricity. The transformer employs two cords on the input side of the transformer that can be connected to the two receptacles normally provided between side-by-side campsites in a campground. The transformer also employs a separate circuit breaker in each hot lead on the secondary side of the circuit employed in the transformer.