Tables ? and ? provide limitations for power-limited circuits.

• A. 12A and 12B
• B. 11A and 11B
• C. 13A and 13B
• D. 12C and 12D

Answer: (A)

Power-limited circuits are restricted circuits designed to operate with limited voltage and current, so the installation rules are tightly defined to keep energy levels safe and predictable. To make sure everything on these circuits stays within those safe boundaries, the code uses dedicated tables that lay out the exact limits installers must follow. The tables identified here are the ones that specify the limitations for power-limited circuits, covering what conductors can be used, how much current each circuit can carry, and how many loads or devices can be connected to a single power-limited run. This standardized guidance helps ensure proper protection, insulation choices, and overall safety for fire alarm and related systems. Other tables in the code address different circuit types or conditions, so they don’t apply to the specific restrictions that govern power-limited circuits.