Which of the following is true regarding RHW-2 wires?

RHW-2 wires are specifically designed to be suitable for use in both wet and dry locations. This versatility is critical, as it allows for their application in various environments, including those that may experience moisture or high humidity levels. The insulation material used in RHW-2 wires is specifically engineered to withstand exposure to water and other elements, which contributes to their broad usability.

In addition, being rated for wet locations means that they can be installed in areas where they may come into contact with water, making them ideal for outdoor and damp environments such as conduit systems, underground installations, or areas exposed to the elements. This attribute is a key factor for contractors and installers who need wiring that can accommodate a range of installation scenarios without compromising safety or performance.

The other options do not accurately represent the capabilities and ratings of RHW-2 wires, thus reinforcing the understanding that they are indeed suitable for both wet and dry locations.