New York State Master Electrician Practice Exam

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Which type of cable is identified for use as underground service entrance cable?

  1. Type USE cable

  2. Type SE cable

  3. Type UF cable

  4. Type MC cable

The correct answer is: Type USE cable

Type USE cable is specifically designed for underground service entrance applications. It features a construction that allows it to withstand the environmental impacts of being buried, including moisture and corrosion. This type of cable is typically used for direct burial in the ground and is suitable for both residential and commercial service entrance installations. The design of Type USE cable incorporates insulation that is appropriate for the conditions found underground, ensuring that it remains durable and functional over time. It is also rated for use in areas where it may encounter water and other challenging conditions that could affect other types of cables. In contrast, while Type SE and Type UF cables are utilized in different electrical applications, they are not specifically designed for underground service entrance. Type SE cable is generally used for overhead service drops and not suitable for direct burial without additional protective measures. Type UF cable is made for underground use but is typically employed for branch circuits rather than service entrance. Type MC cable, on the other hand, is armored cable primarily meant for indoor use or in above-ground scenarios, lacking the necessary specifications for direct burial applications.