Article 725 - Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits
Chapter 7 - Special ConditionsLow Voltage
Control wiring, power-limited circuits, Class 2/3, and separation from power conductors.
Search keywords: Class 2, low voltage, control wire, power limited, thermostat
Reference rule: This card is a field index/bookmark, not the full NEC article text. Verify exact language, exceptions, tables, and local amendments against your licensed 2020 NEC and the AHJ.