Under the NEC, what is a key feature of systems discussed in Article 820?

The key feature of systems discussed in Article 820 of the National Electrical Code (NEC) pertains to the distribution of television signals. This article specifically addresses the requirements for radio and television equipment and associated wiring, which includes the transmission of video signals over coaxial cables and other mediums. The intent of these regulations is to ensure safety and performance standards in the distribution of television signals, protecting both the infrastructure and the consumers utilizing these systems.

By focusing on signal distribution, Article 820 ensures that installations minimize interference, comply with safety standards, and effectively manage the physical properties of television signal transmission. This includes considerations for proper grounding, bonding, and installation methods to facilitate the reliable transmission of signals while safeguarding the equipment and the environment against electrical hazards. Understanding this distribution aspect is crucial for those involved in the installation and maintenance of television reception systems, ensuring compliance with NEC requirements.