What type of wiring requires additional protection in damp or wet locations?

The requirement for additional protection for wiring in damp or wet locations is crucial for ensuring safety and functionality. Standard non-metallic wiring is not designed to withstand moisture, which can lead to deterioration, shorts, or even electrical failures if exposed to such conditions. As such, in areas prone to dampness or water exposure, these types of wiring should be given additional protection.

This protection can come in the form of special coatings, conduits, or enclosures that prevent moisture from damaging the wiring. By using these protective measures, the risk of electrical hazards is significantly reduced, maintaining safety standards set forth in electrical codes and regulations. Other options, such as flexible wiring or non-metallic sheathed cable, also have their own characteristics and applications, but standard non-metallic wiring specifically needs careful consideration and protection in these wet or damp conditions to ensure long-term reliability and safety.