Which type of raceway is specifically designed for outdoor applications?

Rigid PVC is specifically designed for outdoor applications due to its resistance to moisture and various environmental conditions. Unlike metal conduits, which can be prone to rust and corrosion when exposed to the elements, Rigid PVC does not corrode, making it ideal for installations in wet or damp locations. Additionally, it is lightweight, easy to install, and does not require special tools for cutting and joining, which adds to its practicality for outdoor use.

While other conduits have their own advantages, they may not be as well-suited for direct outdoor applications. For instance, metal conduit, although durable, can suffer from corrosion and requires additional protection measures when used outdoors. Flexible non-metallic conduit is suitable for some outdoor applications but may not provide the same level of durability as Rigid PVC in certain harsh environments. EMT (Electrical Metallic Tubing) is typically used for indoor applications and is not intended for direct burial or exposure to moisture without additional protective measures. Thus, Rigid PVC stands out as the best option for outdoor installations.