Article 725 provides the requirements for Class 1 circuits in Part II. A Class 1 circuit is that portion of the wiring between the overcurrent protective device (OCPD) of a Class 1 power supply and ...
Fig. 1. Protecting a cable’s outer insulation layer is vitally important to its integrity and longevity. Courtesy of www.MikeHolt.com. Based on the 2020 NEC. Article 725 of the National Electrical ...