Which type of conduit is most suitable for exposed outdoor installations?

For exposed outdoor installations, PVC conduit is highly suitable due to its weather-resistant properties and ability to withstand environmental elements such as moisture, UV rays, and temperature fluctuations. PVC does not corrode, which makes it particularly beneficial for installations in outdoor settings where exposure to the elements could lead to deterioration over time. Its lightweight nature and ease of installation further contribute to its effectiveness for outdoor applications.

In contrast, while metal conduits like EMT and rigid metal can be used outdoors, they are less ideal because they can corrode when exposed to moisture unless they are treated or coated adequately. EMT is typically not recommended for direct burial or areas where it may be exposed to the elements without protection. Plastic conduit is also considered for various applications, but PVC specifically is designed for outdoor use, offering greater protection against UV degradation and other outdoor conditions.