Which section of the NEC specifically addresses low voltage and limited-energy installations?

The National Electrical Code (NEC) outlines specific rules and regulations governing various aspects of electrical installations, including those for low voltage and limited-energy systems. Article 725 is dedicated specifically to the installation of Class 1, Class 2, and Class 3 remote control, signaling, and power-limited circuits. This article provides the necessary guidelines for the safety and proper installation of low voltage systems, ensuring they are effectively distinguished from higher voltage wiring and installations.

Article 725 encompasses the requirements for wiring methods, conductor types, and system ratings appropriate for these low energy applications, which are crucial in maintaining safety and functionality in systems such as fire alarm circuits, intercoms, and data communication networks. Understanding the details of this article is essential for practitioners working on limited-energy installations, as it dictates compliance and ensures that installations meet national standards for safety and performance.