NEC® Article ___ covers cables for power-limited circuits.

• A. 722
• B. 690
• C. 725
• D. 100

Answer: (A)

The concept being tested is recognizing which NEC article specifically governs cables used with power-limited circuits, such as Class 2 and Class 3 circuits. These circuits are designed to limit the amount of power they can deliver, which affects the types of cables, insulation, ampacity, and installation methods that are allowed.

The correct choice aligns with the article that addresses cables intended for power-limited circuits, covering how they are constructed, rated, and installed to keep low-energy systems safe—think control, signaling, and similar applications. This scope is what makes it the best fit for cables used in power-limited circuits.

The other articles cover different topics or systems (for example, other types of power or lighting circuits, or different wiring standards), so they don’t address the specific requirements and cable types used for low-power, power-limited applications.