In damp or wet locations, how much airspace is needed between the enclosure and the wall or supporting surface?

In damp or wet locations, a specific airspace requirement is established to ensure proper ventilation and moisture management for fire alarm equipment. The minimum airspace of 6 mm between the enclosure and the wall or supporting surface is crucial to prevent moisture accumulation, which can lead to corrosion or malfunction of electrical components. This gap facilitates airflow, allowing any trapped moisture to evaporate and reducing the risk of electrical failure due to humidity. Adequate airspace is critical in maintaining the integrity of the fire alarm system and ensuring it operates effectively in challenging environmental conditions.