Recreational Vehicle (RV) Technician Practice Test

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Prepare for the RV Technician Test with our quiz. Utilize flashcards and multiple-choice questions, complete with hints and explanations. Achieve success in your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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On a three prong 120v plug, the narrow blade is connected to which wire?

Neutral wire
Ground wire
Live (hot) wire
Return wire

The correct answer is: Live (hot) wire

The narrow blade on a three-prong 120V plug is connected to the live (hot) wire. In electrical systems, plugs are designed with specific configurations to ensure proper connection and safety. The narrow blade indicates that it connects to the live wire, which carries the current to the device. The other blade, which is wider, is connected to the neutral wire, allowing the circuit to complete as it returns current back to the source. This design not only ensures that the hot wire is connected properly, preventing the risk of incorrect wiring, but it also helps avoid situations where the device could be energized if the plug were inserted incorrectly. The grounding prong, which is the third prong that is round and usually longer, helps protect against electrical shocks and ensures that the device is safely grounded. Understanding this configuration is essential for recognizing how devices are powered and ensuring their safe operation.