Which conductor type is suitable for high-temperature applications in residential wiring?

The suitable conductor type for high-temperature applications in residential wiring is THWN. This designation indicates that the wire is thermoplastic, heat-resistant, and water-resistant, making it ideal for environments where temperatures can rise significantly. THWN conductors can withstand high temperatures up to 90 degrees Celsius when dry and 75 degrees Celsius when wet, which is critical for both outdoor installations and areas where heat buildup may occur.

Additionally, THWN wire is commonly used in locations that may encounter moisture, thus enhancing its versatility in various residential wiring applications. The combination of heat resistance and moisture protection allows for safer and more efficient handling of electrical systems that could experience higher temperatures, ensuring longevity and reliability of the wiring.