Question: is xhhw wire tray rated?
Answer: Conductor shall be UL-listed Type XHHW-2 rated for cable tray use and sunlight resistance. Also, suitable for operation at 600 volts or less in wet or dry locations, at temperatures not to exceed 90°C. Conductors shall be annealed copper. XHHW-2 shall be PRO-LINE WIRE & CABLE or approved equal.