Ko THHN, THWN me THW he momo waea hiko kotahi te ara iahiko e whakamahia ana i roto i ngā kāinga me ngā whare hei tuku hiko. I mua, he momo waea rerekē a THW THHN THWN me ngā whakaaetanga me ngā tono rerekē. Engari ināianei, anei tētahi waea THHN-2 whānui e kapi ana i ngā whakaaetanga katoa mō ngā momo katoa o THHN, THWN me THW.
1. He aha te Waea THW?
Ko te waea Thw e tohu ana i te waea kirihou wera, ātete wera me te wai. He mea hanga ki te ara iahiko parahi me te whakamarumaru PVC. E whakamahia ana mō ngā ara iahiko hiko me te rama i roto i ngā whare ahumahi, arumoni me ngā whare noho. Ka taea te whakamahi i tēnei momo waea i ngā wāhi maroke me ngā wāhi mākū, ko tōna pāmahana mahi mōrahi ko te 75 ºC, ā, ko tōna ngaohiko mahi mō ngā tono katoa ko te 600 V.
Waihoki, kāore te kupu "N" mō te paninga nairona i roto i te kupu whakarāpopototanga THW. He rite te āhua o te paninga nairona ki tētahi wahi kirihou iti, ā, he rite tonu te tiaki i ngā waea. Ki te kore te paninga nairona, he iti noa te utu mō te waea THW, engari he iti noa te tiakitanga mai i ngā āhuatanga kino o te taiao.
Te Wāhanga Waea THW
• ASTM B-3: Ngā Waea Parahi kua Whakamahanahia, Ngāwari rānei.
• ASTM B-8: Ngā Kaiārahi Tauira Parahi i roto i ngā Paparanga Kōpikopiko, Mārō, Āhua-mārō, Ngāwari rānei.
• UL – 83: Ngā Waea me ngā Taura kua Whakamātaohia ki te Rauemi Kirihou.
• NEMA WC-5: Ngā Waea me ngā Taura kua Whakamātaohia ki te Rauemi Thermoplastic (ICEA S-61-402) mō te Tuku me te Tohatoha i te Mana Hiko.
2. He aha te Waea THWN THHN?
Ko te THWN me te THHN e tāpiri ana i te "N" ki te whakarāpopototanga, ko te tikanga he waea pania ki te nairona katoa. He rite te waea THWN ki te THHN. He ātete wai te waea THWN, ā, e tāpiri ana i te "W" ki te whakarāpopototanga. He pai ake te mahi ātete wai a THWN i te THHN. Ka taea te whakamahi i te THHN, i te THWN rānei mō ngā ara hiko me te rama i roto i ngā whare ahumahi, arumoni me ngā whare noho, he tino pai mō ngā whakaurunga motuhake mā roto i ngā paipa uaua, ā, hei whakamahi i roto i ngā rohe whakakoi, i poke rānei i te hinu, te hinu, te penehīni, me ētahi atu matū waikura pērā i ngā peita, ngā whakarewa, me ētahi atu. Ko tēnei momo con
Wā tuku: Hepetema-14-2024