He rauemi waea hiko maha ngā whakamahinga o te waea THW, ā, he pai ōna mō te ātete ki te pāmahana teitei, te ātete ki te kakahu, te kaha hiko teitei, me te ngāwari ki te tāuta. He whānuitia te whakamahinga o te waea THW i roto i ngā taura whare noho, arumoni, waea hiko, me waea hiko whenua, ā, ko tōna pono me tōna ōhanga kua noho hei tetahi o ngā rauemi waea pai rawa atu i roto i ngā ahumahi hanga me te hiko.
He aha te waea THW?
Ko te waea THW he momo taura hiko whānui e hangaia ana i te nuinga o te wā he ara iahiko i hangaia ki te parahi, ki te konumohe rānei, me te rauemi whakamahana i hangaia ki te polyvinyl chloride (PVC). Ko te THW he tikanga Plastics High-temperature Weather-resistant Aerial Cable. Ka taea te whakamahi i tēnei waea ehara i te mea mō ngā pūnaha tohatoha o roto anake, engari mō ngā taura o runga me raro whenua hoki, me te whānuitanga o ngā tono. He whānuitia te whakamahinga o te waea THW i Amerika Te Raki me ētahi atu rohe, ā, he tino rongonui.
Ngā āhuatanga o te waea THW
1. He ātete pāmahana teitei, ka whakamahia e te waea THW te rauemi PVC hei paparanga whakamarumaru, ā, he pai rawa atu te ātete pāmahana teitei o te waea, ā, ka taea te tu atu i te pāmahana mahi teitei me te kawenga iahiko. Nō reira, he tino pai te waea THW mō te whakamahi i roto i ngā taiao pāmahana teitei.
2. Ātete ki te kakahu, he mea hanga te anga o waho o te waea THW ki te rauemi PVC, ka taea te tiaki pai i te waea mai i te kakahu me te pakaru. Kāore tēnei waea e pāngia e ngā āhuatanga ā-tinana, ā-matū rānei o waho, ā, ka taea te pupuri i tana mahi pai mō te wā roa.
3. He kaha te hiko o te waea THW, ā, ka taea te mahi haumaru i raro i ngā āhuatanga hiko teitei. Ka taea e tēnei waea te tu atu ki te hiko mōrahi o te 600V, ka taea te whakatutuki i ngā hiahia o te nuinga o ngā tono kāinga me ngā tono arumoni.
4. He māmā te tāuta, he ngāwari te waea THW, ā, he tino māmā te tāuta me te waea. Nā tōna ngāwari me te ngāwari, ka taea te piko me te miro i te waea THW, kia māmā ake ai te tāutanga.
Te whakamahinga o te waea THW
1. Mō te whakamahinga kāinga me te arumoni, ko te waea THW te wāhanga matua o ngā ara iahiko ā-roto me ngā pūnaha tohatoha o ngā whare, e whakamahia whānuitia ana mō te tuku hiko o ngā taputapu whare pēnei i ngā rama, ngā putanga hiko, ngā pouaka whakaata, me ngā hauhautanga.
2. Nā te ātete o te waea THW ki te pāmahana teitei me te ātete ki te kakahu, ka taea e ia te tu atu i ngā āhuatanga huarere kino me ngā pānga taiao o waho, nō reira e whakamahia whānuitia ana i roto i ngā waea taura o runga.
3. Mō ngā taura raro whenua, ka taea e te paparanga whakamarumaru o te waea THW te ārai i te waea kei pā ki te wai, ki ētahi atu taiao o waho rānei, nō reira he maha ngā wā e whakamahia ana i roto i ngā taura raro whenua. Ka taea e tēnei waea te ātete ki te haumākū me ngā taiao haukū, ā, ka taea hoki te tiaki i te waea mai i te waikura me te pakaru.
Waea THW VS. Waea THWN
He hua waea matua kotahi te waea THW, te waea THHN me te waea THWN. He tino rite te āhua me ngā rauemi o ngā waea THW me ngā waea THWN, engari ko tētahi rerekētanga nui i waenganui i a rāua ko te rerekētanga o te whakamarumaru me ngā rauemi koti. Ka whakamahia e ngā waea THW te whakamarumaru polyvinyl chloride (PVC), ko ngā waea THWN ia ka whakamahia e te whakamarumaru polyethylene thermoplastic (XLPE) teitei ake. Ki te whakatauritea ki te PVC, he pai ake te mahi a te XLPE, he pai ake te ātete ki te wai me te pāmahana. I te nuinga o te wā, ka eke te pāmahana mahi o te waea THWN ki te 90°C, ko te waea THW ia he 75°C noa iho, arā, he kaha ake te ātete wera o te waea THWN.
Waea THW VS Waea THHN
Ahakoa he mea hanga ngā waea THW me ngā waea THHN i ngā waea me ngā paparanga whakamarumaru, nā te rerekētanga o ngā rauemi whakamarumaru ka rerekē te mahi a ētahi o rātou. Ka whakamahia e ngā waea THW te rauemi polyvinyl chloride (PVC), ko ngā waea THHN ia ka whakamahia e te kapia epoxy acrylic pāmahana-teitei (THERMOPLASTIC HIGH HEAT RESISTANT NYLON), e mau tonu ana te pumau i ngā pāmahana teitei. Hei tāpiri, he ngawari ake ngā waea THW i ngā waea THHN kia pai ai te whakamahi i ngā āhuatanga tono maha.
He rerekē anō hoki te tiwhikete o ngā waea THW me ngā waea THHN. Ko te UL me te CSA, ngā whakahaere tiwhikete paerewa matua e rua i te Hononga o Amerika me Kanata, e whakarato ana i te tiwhikete mō ngā waea THW me te THHN. Heoi, he rerekē paku ngā paearu tiwhikete mō ngā mea e rua. Me whai tiwhikete UL te waea THW, ko te waea THHN ia me tutuki i ngā whakaritenga o ngā tari tiwhikete UL me te CSA.
Hei whakarāpopototanga, he rauemi waea e whakamahia whānuitia ana te waea THW, ā, ko tōna pono me tōna ōhanga kua noho hei tētahi o ngā rauemi waea e pai ana mō te umanga hanga me te umanga hiko. He tino pai te mahi a te waea THW, ā, ka taea te whakatutuki i ngā hiahia o ngā wā maha, ka kawea mai he whakamarie me te haumaru ki tō tātou oranga me te umanga.
Wā tuku: Hōngongoi-15-2023