Which article of the NEC pertains to the wiring of burglary system controls?

• A. Article 725
• B. Article 760
• C. Article 600
• D. Article 300

Answer: (A)

Burglary system controls use low‑voltage signaling circuits, which the NEC covers under Article 725. This article specifically governs Class 2 and Class 3 circuits, the kinds of wiring and protections used for burglar alarm wiring, control panels, detectors, and related devices. It sets rules for conductor types, insulation, ampacity, overcurrent protection, and how the low‑voltage wiring must be separated from higher‑voltage power circuits to reduce fire and shock hazards.

Other articles mentioned aren’t about burglar alarm wiring: one deals with fire alarm systems, another with electric signs, and the last covers general wiring methods for nonpower conductors. So the appropriate reference for the wiring of burglary system controls is Article 725.