Circuits that fall under the requirements of Art. 725 are remote-control, signaling, and power-limited circuits that aren’t an integral part of a device or appliance. Article 725 includes circuits for ...

Q. What is the smallest conductor allowed by the NEC for Class 1 control and signal circuits? A. Conductors of sizes 18 AWG and 16 AWG installed in a raceway, enclosure, or listed cable are permitted ...