WindyNation Solar Panel Extension Cable WNI's solar panel extension cable is an excellent addition to your solar equipment. You can choose between 8 gauge, 10 gauge, and 12 gauge solar cable and several length options. Your cable will arrive terminated with WNI PV solar connectors. UL Listed as XLP USE-2 or RHH/RHW-2RoHS CompliantWet/Dry Temperature: -40C to 90CSunlight ResistantDirect Burial Solar Cable Features Solar Connectors Solar cable arrives terminated with solar connectors. Solar Connectors are the industry standard for connecting photovoltaic panels for safe operation. The connectors are specially designed with a watertight seal and coated with a UV-resistant coating. Copper Conductors Solar cable is fully annealed stranded bare copper per ASTM B3. Class B stranding. Polyethylene Insulation Jacket Solar cable insulation jacket is chemically crosslinked polyethylene. Available in both black and red.