According to Figure 234.411, what is the minimum size wire permitted for the branch circuit?

In determining the minimum size wire permitted for a branch circuit, reference is often made to the National Electrical Code (NEC) standards, which provide guidelines for wire sizing based on the amperage of the circuit and its application. In this instance, Figure 234.411 likely provides specific information regarding branch circuits, indicating the appropriate wire gauge necessary to ensure safety and compliance.

Choosing 10 AWG as the minimum size wire aligns with established practices for branch circuits that carry moderate loads. This gauge is generally capable of handling up to 30 amps, which is commonly required for various residential and light commercial applications. Ensuring that the wire is of adequate size is crucial for preventing overheating, reducing voltage drop, and minimizing the risk of electrical fires.

Utilizing a wire size smaller than 10 AWG could compromise the circuit's performance and safety, as it may not be able to handle the necessary load without risk. Hence, selecting 10 AWG takes into account both safety standards and the electrical demands anticipated for the branch circuit, making it the correct answer.