According to industry standards, remote control wiring must be installed in compliance with which article?

• A. NEC article 710
• B. NEC article 600
• C. NEC article 725, class 2
• D. NEC article 500

Answer: (C)

Remote control wiring falls under the specifications outlined in NEC article 725, which addresses low-voltage circuits, including those for remote control, signaling, and power-limited applications. This article is significant because it provides guidelines that ensure safety and proper functioning of these systems, especially regarding their installation and the types of conductors that can be used.

Article 725 sets forth the requirements for Class 2 and Class 3 circuits, which have inherently limited power levels to reduce the risk of shock and fire hazards. Class 2 circuits, in particular, are designed for remote control applications where the voltage and current are limited, making them safer for installation in various environments. Compliance with this article ensures that the installation is not only safe but also adheres to industry standards, fulfilling regulatory and performance criteria.

The other articles mentioned pertain to different aspects of electrical installations. For example, article 600 deals with the installation requirements for signs, article 710 pertains to stand-alone systems, and article 500 is focused on hazardous locations. Each of these articles addresses specific applications and scenarios that do not directly apply to remote control wiring, thus reinforcing why NEC article 725 is the correct reference for this question.