Can PVC boxes be used with metallic conduit?

PVC (polyvinyl chloride) boxes can indeed be used with metallic conduit, provided that they are compatible and properly sealed. This compatibility is important to ensure that there are no unintended pathways for moisture or other elements that could lead to corrosion or electrical issues. When joining PVC and metallic components, certain fittings and connectors designed for such uses must be utilized to maintain a secure and relevant connection.

The requirement for proper sealing helps to prevent the ingress of moisture and protect against environmental factors that could otherwise compromise the integrity of the electrical installation. The NEC has specific guidelines regarding how these materials should be used together to ensure safety and functionality in electrical systems. This combination is particularly useful in applications where the flexibility of PVC is beneficial while still maintaining protection through rigid metallic conduit.

In contrast to other options, which suggest either total incompatibility, limitations to specific environments or temporary usage, the correct choice recognizes the potential for compatibility and the importance of adhering to proper installation practices.