Glossary of RV Terms

The RV community is just like any other—it has its own set of words, abbreviations, and slang terms. In this glossary we define the common terms and some of the more unusual slang.

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Umbilical Cord

Wiring harness which connects the trailer to the tow vehicle during transport. The umbilical cord supplies the trailer with DC power for charging the batteries and operating DC equipment. It also operates the trailer brakes and signal lights.

UVW (Unloaded Vehicle Weight)

Unloaded Vehicle Weight (UVW) is the weight of a vehicle as manufactured at the factory. It includes full engine and generator fuel tanks and fluids, if applicable. It does not include cargo, water, propane, or dealer-installed accessories. It may or may not include factory installed options. Be aware that some manufacturers weigh each unit to determine UVW, while others provide only the average or estimated weight for each model. For additional details see Understanding RV Weights.

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