Which type of wires use rubber insulation but are suitable for wet locations?

Wires that utilize rubber insulation and are suitable for wet locations are specifically categorized under the RHW-2 type. This designation indicates that the wire is not only rated for wet environments, but it also features a higher heat resistance when compared to other similar types. The RHW-2 construction is suitable for direct burial and is often used in various applications that require exposure to moisture, such as in outdoor settings or areas prone to water exposure.

The inclusion of rubber insulation is significant because it provides an additional layer of protection against moisture compared to some other insulation types. This makes RHW-2 wires ideal for situations where the risk of water intrusion is present, ensuring the safe and effective operation of electrical systems in these conditions.

In contrast, while RHH, RHW, and NM might have their specific uses and ratings, they do not meet the same standards for wet locations as RHW-2 does. It is the combination of the rubber insulation and the specific ratings that makes RHW-2 the most suitable choice for this application.