Type THHN-THWN-2 building wire is intended for general purpose applications and may be installed in conduit, duct, or other recognized raceways in wet (60oC oil/90oC water) or dry (105oC) locations. For both new work and rewiring applications, the smaller diameter of wire permits additional circuits or larger conductors to be installed in the conduit without exceeding maximum fill limitations. The insulation is a high quality, heat and moisture resistant polyvinyl chloride compound over which a heat and light stabilized nylon jacket is tightly applied.
