These requirements cover single-conductor and multi-conductor@ unjacketed@ 18 ?C 10 AWG (0.807 ?C 5.16 mm2)@ low voltage LED wire rated 105???C 250??(221???C 482??@ and 300 or 600 volts@ suitable for installation in dry and damp@ or wet locations. These wires are for use with signs@ outline lighting@ and interior lighting where the wire is only connected to the output of the driver to the LED array@ is only accessible during user servicing of the sign@ and is not required to be additionally enclosed by the sign enclosure@ in accordance with the Standard for Electrical Signs@ UL 48. Assemblies that include these wires and are intended for use as components of signs shall meet the requirements in the Standard for Electric-Sign Components@ UL 879. Wires that are surface marked ?-EX? are for use as exposed runs between a cable tray and utilization equipment where the wires are continuously supported and protected against physical damage using mechanical protection such as struts@ angles@ or channels.