NEC
NFPA 70 §Article 725
Class 2 and Class 3 power-limited circuits
- Publication
- NFPA 70
- Edition
- 2023
- Section
- §Article 725
What it requires
Governs the CIRCUIT: power source limitations, separation from other circuits, and installation of Class 2 and Class 3 power-limited control and signaling circuits. Class 1 circuits are Article 724 as of the 2023 edition, and the cable type, listing, marking and substitution rules are Article 722.