Flame retardant, nylon-insulated wire connector with blue cap and white body connects 2 or 3 wires Tin-plated brass element construction provides good conductivity and corrosion resistance Accommodates 22 to 14 AWG solid/stranded copper and common wires T, TF, TFF, TFN, TFFN, AWM, TEW, SAE-GPT UL Listed, CSA Certified and RoHS 2011/65/EU Compliant Operating temperature 221F (105C) with a 600 volts maximum for building wire, and a 1000 volts maximum for signs, fixtures and luminaires Not recommended for direct underground burial or other submerged applications For industrial/occupational use only. Not for consumer sale or use