Which may be used for power-limited circuit wiring?

Which may be used for power-limited circuit wiring?

• A. Chapter 3 methods
• B. Non-power-limited methods
• C. Power-limited methods
• D. Protection methods

Answer: (C)

Power-limited circuits have a restricted energy supply, commonly used in fire alarm systems. For wiring these circuits, you must use power-limited methods—the approved installation approaches for Class 2/3 circuits. This matches the circuit’s limitations and safety requirements, so it’s the best choice. Chapter 3 methods describe general wiring methods and aren’t specific to the power-limited category. Non-power-limited methods are for circuits without energy restrictions, which isn’t appropriate here. Protection methods deal with safeguards and devices, not the wiring method category.

Power-limited circuits have a restricted energy supply, commonly used in fire alarm systems. For wiring these circuits, you must use power-limited methods—the approved installation approaches for Class 2/3 circuits. This matches the circuit’s limitations and safety requirements, so it’s the best choice. Chapter 3 methods describe general wiring methods and aren’t specific to the power-limited category. Non-power-limited methods are for circuits without energy restrictions, which isn’t appropriate here. Protection methods deal with safeguards and devices, not the wiring method category.