Service Wire Co. (Culloden, WV) now offers UL approved dual rated tray cable for 600V/1kV applications. Service Wire’s UL 1277 listed tray cable includes XHHW-2 with PVC, ServiceCPE or EnviroPlus (LSZH) jacket. The 2018 update to UL 1277, the standard for electrical power and control tray cable, has allowed manufacturers with UL approved tray cable to list products as 600V/1kV rated. To be dual rated, products must use a recognized 1kV rated conductor and pass a higher voltage AC Hipot test on the completed cable. According to Service Wire, it's tray cable has always been UL 1277 compliant, and as a result of the recent UL update, its products are now approved for more robust applications.
This electrically resilient cable is a cost-effective alternative in applications at risk for potential voltage spikes. Dual rated tray cable provides extra protection for critical circuit applications, and also offers flexibility in newer constructions.