For locations not specifically identified in Table 300.5, what is the designation of a low voltage lighting system that allows for a lesser cover depth?

When considering locations not specifically identified in Table 300.5 of the National Electrical Code (NEC), a low voltage lighting system that allows for a lesser cover depth is designated as "listed." This designation indicates that the system has been evaluated and certified by a recognized testing laboratory to meet specific safety standards and performance criteria.

The term "listed" refers to products that have been tested and found suitable for a particular use based on compliance with established regulations and standards. In this context, the low voltage lighting system's listing allows for a reduction in the required cover depth compared to standard wiring methods. This is important for ensuring the safety and integrity of the electrical installation while allowing some flexibility in design and application.

Understanding the concept of a "listed" designation is crucial for electricians and engineers when selecting materials and methods that must comply with electrical codes, as it assures that the equipment has met rigorous testing requirements.