ʻO THHN Thermoplastic High Heat-resistant Nylon-coated wire he uea alakaʻi hoʻokahi me ka PVC insulation a me ka lole nylon.ʻO ka THWN thermoplastic wela- a me ka wai-kūpaʻa uea like loa me THHN a ua hoʻohana pinepine ʻia nā mea ʻelua.ʻO THWN kekahi uea alakaʻi hoʻokahi me ka pale PVC a me kahi kapa nylon.ʻO ka uea THWN-2 he uea THWN me ka pale wela keu a hiki ke hoʻohana ʻia i nā kūlana wela kiʻekiʻe loa (a hiki i 90°C a i ʻole 194°F).