When installing a weatherproof cabinet in a wet location, what is the minimum airspace required between the cabinet and the wall?

When installing a weatherproof cabinet in a wet location, the requirement for airspace is critical to ensure the cabinet remains effective in preventing moisture intrusion and to allow for proper ventilation. In this scenario, the minimum airspace required between the cabinet and the wall is specified as 0 inches. This indicates that the cabinet can be flush-mounted against the wall without any additional spacing, provided it is designed for such installation in compliance with applicable codes and standards.

Having no required airspace underscores the importance of the cabinet's design and sealing capabilities, as it should possess adequate weather-tight features to protect its internal components from moisture ingress. This means that the cabinet must be installed using appropriate gaskets and seals, ensuring that even when tightly mounted against the wall, it can prevent water from entering effectively.

While other options suggest varying degrees of airspace, which may apply in different contexts or specific installations that require thermal expansion space or airflow, for a properly rated weatherproof cabinet, a 0-inch airspace is accepted when the unit is designed for such use in a wet location.