What type of conduit is most suitable for use in wet locations?

Rigid metal conduit (RMC) is the most suitable type of conduit for use in wet locations due to its robust construction and ability to provide a high level of protection against moisture and physical damage. RMC is made of heavy-duty steel or aluminum that not only resists corrosion when properly treated but also offers mechanical strength that is crucial in environments where water and other potentially damaging elements are present.

This conduit type is specifically designed to handle the harsh conditions of wet locations, ensuring both safety and reliability in electrical installations. The watertight fittings used with RMC further enhance its effectiveness in preventing moisture ingress, thus safeguarding the electrical wiring within.

In contrast, while PVC conduit is also resistant to moisture, it may not offer the same level of protection against physical impacts or high-temperature situations that RMC can provide. Flexible conduit, although versatile, often isn't as resilient as rigid metal options when it comes to harsh weather or wet environments. Electrical metallic tubing (EMT) does not provide the same level of moisture resistance since it is not typically designed to be watertight. Therefore, RMC stands out as the ideal choice for installations that need to endure wet conditions.