Type XHHW-2/RW90 building wire is intended for general purpose applications utilized in conduit, underground in conduit, or other recognized raceways for services, feeders, and branch-circuit wiring as specified in the National Electrical Code (NEC). Type XHHW-2/RW90 is permitted for 600 volt applications and can be used in wet or dry locations at temperatures not to exceed 90ºC. Suitable for applications requiring low-leaking circuits and a dielectric constant of 3.5 or less.

XHHW Wire consists of stranded, uncoated bare copper conductors per ASTM-B3, ASTM-B787 and ASTM-B8.