Izintambo ze-TW/THW ziyi-conductor yethusi eqinile noma eminyene, ethambile efakwe nge-Polyvinylchloride (PVC).
I-TW wire imele i-thermoplastic, intambo engangeni emanzini.
Intambo ye-THW iphinde ibe yi-thermoplastic, intambo engangeni emanzini, kodwa ikwazi ukumelana nokushisa, okuchazwa ngu-H egameni.