According to the NEC®, what is the smallest permissible wire size for branch circuit conductors that serve appliances other than cooking appliances?

Enhance your knowledge with the IEC Year 2 Part 2 Test. Utilize multiple-choice questions and explanations to prepare for your exam!

The National Electrical Code (NEC®) stipulates minimum wire sizes to ensure safety and efficiency in electrical installations. For branch circuit conductors serving most general-purpose appliances, the smallest permissible wire size is 14 AWG. This size is adequate to safely carry the electrical load typically required by appliances, ensuring that the conductors do not overheat and are capable of handling potential circuit overloads.

Choosing a larger wire size, such as 12 AWG or 10 AWG, would generally be acceptable for higher current ratings or specific applications, but it is not required for standard appliances other than cooking. A 16 AWG wire is not permitted for general-purpose branch circuits due to its lower current-carrying capacity, which could lead to overheating and a potential safety hazard. Thus, the selection of 14 AWG as the minimum size reflects NEC® guidelines to promote safe and efficient electrical systems.

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