Which NEC article covers burglary system wiring?

• A. Article 725
• B. Article 700
• C. Article 600
• D. Article 800

Answer: (A)

Burglary system wiring is treated as low‑voltage signaling and control circuits. The NEC groups these power‑limited interconnections into Class 2 and Class 3 circuits, which have specific limits on voltage, current, and protection to keep wiring safe and installation straightforward. Article 725 covers these circuits in detail, including allowable wiring methods, protection, and the equipment used for security systems like burglar alarms. That focus makes it the most appropriate place in the code for burglar alarm wiring.

Other articles govern different kinds of systems, such as emergency power or communications wiring, and don’t specifically address the Class 2/3 wiring requirements that burglar alarms use, so they aren’t the best fit for this topic.