UL 4703 rated cable is superior to USE-2 in regards to low temperature flexibility, sunlight resistance, and flame resistance. PV wire for solar panels also has a thicker jacket and insulation than USE-2 wire. USE-2 cable is used in grounded PV systems only, which UL 4703 cable can be used for both grounded and ungrounded arrays. Silver-plated Copper Terminals outlast and outperform tin-plated models. Used for Solar panels, DC circuits, and inverter wiring.Connectors rated for 35 amp 1000v, 12 AWG wire rated for 31 amps Test voltage: 6 kV (50 Hz) PC/PA Insulation Rated for -40°C ~ 85°C IP67 Protection Grade, Safety class II, Flame class UL94-V0 Contact resistance Less than or equal to 5 mOhm Insertion force: Less than or equal to 50N Withdrawl force: Greater than or equal to 50N Snap-in locking system Bare copper conductor Cross linked Polyethylene (XLP) insulation Max. voltage 600 V, -40°C to 90°C Type USE-2 per UL 854, RHH/RHW-2 per UL 44, Type PV per UL 4703