Twist On Wire Connector Color Red For Conductor Material Copper Maximum Operating Temperature 221 Degrees F Maximum Voltage 600 V Minimum Wire Combination (2) 14 AWG Maximum Wire Combination (5) 12 AWG Contact Material Steel UL 94 Flammability Rating V-2 Maximum Conductors 6 Standards CSA Certified UL Listed Wire Connector Style Wing Insulation Material Polypropylene Maximum Single Wire Size 10 AWG Minimum Single Wire Size 18 AWG Overall Height 0.91 in Overall Width 0.63 in