Subj.758 Section 3 Page 3219 Issued:1967-07-13
Style 3219 Single or multiple conductor with extruded insulation

Rating150 deg C, 300 Vac, Horizontal Flame.
ConductorResistance wire alloy with minimum diameter of 0.0015 inch, it shall be applied spirally around a glass or aramid fiber core and have a minimum of 20 turns per inch.
InsulationExtruded SR, 30 mils minimum average thickness, 27 mils minimum thickness at any point.
StandardAppliance Wiring Material UL 758.
UseHeating wire for use only as refrigerator defrost heater wire where not subjected to flexing or motion.

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