Remember that the Class 2 or 3 circuit begins at the power supply. That means conductors and equipment on the supply side of the Class 2 or 3 power source must be installed in accordance with Chapters ...

Class 1 circuit requirements. Class 1 power-limited circuits must be supplied from a power supply that limits the output to 30V and no more than 1,000VA [Sec. 725.41(A)]. Class 1 remote-control and ...