Ngokusho kwe-insulation material, i-heater wire ingaba i-PS resistant heat wire, i-PVC yokushisa i-silicone, i-silicone ye-rubber yokushisa, njll. Ngokusho kwendawo yamandla, ingahlukaniswa ngamandla owodwa namandla amaningi izinhlobo ezimbili zokushisa. .