I-THHN Thermoplastic High Intambo enayiloni ekwazi ukumelana nokushisa iwucingo lwekhondatha olulodwa olunokufakwa kwe-PVC nejakhethi enayiloni.I-THWN thermoplastic heat- kanye nentambo evikela amanzi iyafana ne-THHN futhi zombili zivame ukusetshenziswa ngokushintshana.I-THWN iphinde ibe wucingo olulodwa lwekhondakta olunokufakwa kwe-PVC nejakhethi enayiloni.Intambo ye-THWN-2 ngokuyisisekelo iyintambo engu-THWN enokuvikelwa okwengeziwe kokushisa futhi ingasetshenziswa ezimweni zokushisa okuphezulu kakhulu (kufika ku-90°C noma ku-194°F).