Journeyman Electrician Practice Exam

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Prepare for the Journeyman Electrician Exam. Test your skills with multiple-choice questions designed to help you succeed. Each question comes with hints and detailed explanations to assist in your study process.

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What is the minimum permitted burial depth of Type UF cable used for direct buried residential branch circuits of 120 volts?

8 inches
10 inches
12 inches
14 inches

The correct answer is: 12 inches

The minimum permitted burial depth for Type UF (Underground Feeder) cable used for direct burial in residential branch circuits of 120 volts is indeed 12 inches. This requirement is based on the National Electrical Code (NEC), which outlines safety standards to protect electrical installations. Directly buried cables need to be buried at a depth that reduces the risk of mechanical damage and exposure to the electrical system. The specific depth of 12 inches ensures adequate protection from natural elements, surface activities, and potential disturbances that could damage the cable. While some other types of cable and conduit may have different depth requirements, Type UF cable's specified depth helps ensure that it remains safe and functional over time, particularly in a residential setting where there may be outdoor activities or landscaping that could impact the burial site.