Which kind of boxes are allowed in damp locations?

In damp locations, the National Electrical Code (NEC) allows the use of weatherproof or listed damp location boxes because they are specifically designed to prevent moisture intrusion and provide adequate protection for electrical connections. These boxes are constructed with materials and features that help ensure they remain safe and functional in environments where humidity and moisture are prevalent.

Using a weatherproof or damp location box helps ensure compliance with safety standards, as they are tested and rated for such conditions. This contrasts with standard wall boxes, which may not offer adequate protection against moisture and could lead to electrical failures or hazards.

In addition, while damp location boxes are appropriate, the specification for "weatherproof" indicates that these boxes can handle more severe moisture exposure, making them suitable for both damp and more challenging outdoor conditions. Thus, the inclusion of both types in the correct answer prevents any ambiguity related to environmental exposure, ensuring that installations in damp locations adhere to safe electrical practices.