Which section addresses the requirement for a flame-resistant braid for exposed runs of braid-covered insulated conductors operating at over 1,000 volts?

The requirement for a flame-resistant braid for exposed runs of braid-covered insulated conductors operating at over 1,000 volts is addressed in Section 300.39. This section specifically outlines the installation requirements and characteristics necessary to ensure that conductors operating at high voltages are adequately protected against potential hazards, including those associated with fire.

Using a flame-resistant braid helps mitigate risks when conductors are installed in accessible locations where they may be subjected to environmental challenges. This protective feature is critical for maintaining safety standards, preventing fire hazards, and ensuring the reliable performance of electrical systems. Furthermore, the flame-resistant characteristics of the braid help to enhance the overall integrity of the installation, complying with the relevant safety standards for high-voltage applications.