Oregon 2 Hour 2020 NEC Chapters 8 & 9

This class presents every significant change to Article 725 [Class 1, Class 2, and Class 3 Remote-Control Signaling and Power-Limited Circuits] and Article 770 [Optical Fiber Cable] adopted for the 2020 National Electrical Code® (NEC-2020. There are 5 significant changes to this Chapter covered, including clarifications on the Use of Class 1, Class 2, and Class 3 Remote-Control Signaling and Power-Limited Circuits, and three changes to Article 770 on OFC: Mechanical Execution of Work, Cable Routing Assemblies and Cable Trays, and Installation in Enclosures shared with energized conductors.

A video provides a useful overview of the substantial overhaul of Chapter 8. A review of seven changes drawn from Articles 800 & 805 follows, providing details on the repurposing of Article 800 for General Requirements and the reorganizations and revisions for the Sections moved or added to the new Article 805. The class concludes with two changes to Article 840 on increasingly important Premises-Powered Broadband Communications Systems: 1) Circuits Leaving the Building and 2) Powering Communications Equipment over Communications Cables and a quick look at the one change made to the Tables in Chapter 9.

Each change presented in the class is accompanied by a thoroughgoing discussion of what the change means and the reason it was installed in the Code. The goal is to express every change in clear language, to focus on how the changes should be applied by a working electrician, and to provide the resources to explore the change more fully for those who wish to do so.