... C & 300V 4.Use only as Refrigerator Defrost Heater Wire. UL 3130 resistance wire Style 3130Insulated Heating Wire Rating150 deg C, 300 ... average, 40 mils minimum at any point. StandardAppliance Wiring Material UL 758. MarkingGeneral. UseFor use only as Refrigerator Defrost Heater Wire ... , blue, red, black, brown, yellow, green, transparent, yellow/green, etc UL 3130 resistance wire