He mea uea uila maʻalahi ka uea THW nona nā pono o ke kūpaʻa wela kiʻekiʻe, ke kūpaʻa ʻana i ka ʻaʻahu, ka mana uila kiʻekiʻe, a me ke kau maʻalahi. Hoʻohana nui ʻia ka uea THW ma nā laina uea noho, kalepa, luna, a me lalo o ka honua, a ua lilo kona hilinaʻi a me ka hoʻokele waiwai i hoʻokahi o nā mea uea i makemake ʻia i nā ʻoihana kūkulu hale a me nā ʻoihana uila.
He aha ka uea THW
ʻO ke kaula THW kahi ʻano kaula uila no nā kumu maʻamau i hana nui ʻia me kahi alakaʻi i hana ʻia me ke keleawe a i ʻole ka alumini a me kahi mea insulation i hana ʻia me ka polyvinyl chloride (PVC). ʻO THW ke kū nei no Plastics High-temperature Weather-resistant Aerial Cable. Hiki ke hoʻohana ʻia kēia kaula ʻaʻole wale no nā ʻōnaehana hoʻolaha o loko akā no nā laina kaula ma luna a me lalo o ka honua, me nā ʻano hana like ʻole. Hoʻohana nui ʻia ke kaula THW ma ʻAmelika ʻĀkau a me nā wahi ʻē aʻe a kaulana loa.
Nā hiʻohiʻona o ka uea THW
1. Ke kū'ē i ke ana wela kiʻekiʻe, hoʻohana ka uea THW i ka mea PVC ma ke ʻano he papa insulation, ka mea e loaʻa ai i ka uea ke kū'ē maikaʻi loa i ke ana wela kiʻekiʻe a hiki ke kū i ka mahana hana kiʻekiʻe a me ke kaumaha o kēia manawa. No laila, kūpono loa ka uea THW no ka hoʻohana ʻana i nā wahi wela kiʻekiʻe.
2. Ke kū'ē i ke kapa komo, hana ʻia ka ʻaoʻao waho o ka uea THW i ka mea PVC, hiki ke pale pono i ka uea mai ka ʻaʻahu a me ka hōʻino. ʻAʻole hoʻopilikia ʻia kēia uea e nā mea kino a kemika paha o waho a hiki ke mālama i kāna hana maikaʻi no ka manawa lōʻihi.
3. Me ka mana uila kiʻekiʻe, loaʻa i ka uea THW kahi mana uila kiʻekiʻe a hiki ke hana palekana ma lalo o nā kūlana uila kiʻekiʻe. Hiki i kēia uea ke kū i ka uila kiʻekiʻe o 600V, hiki ke hoʻokō i nā pono o ka hapa nui o nā noi noho a me nā ʻoihana.
4. Maʻalahi e hoʻouka, he palupalu iki ka uea THW, e maʻalahi ai ke hoʻouka a me ka uea. Ma muli o kona elasticity a me ka palupalu, hiki ke pelu maʻalahi a wili ʻia ka uea THW, e ʻoi aku ka maʻalahi o ke kau ʻana.
Ka hoʻohana ʻana o ka uea THW
1. No ka hoʻohana ʻana i nā hale noho a me nā ʻoihana, ʻo ka uea THW ka ʻāpana nui o nā kaapuni kūloko a me nā ʻōnaehana hoʻolaha o nā hale, i hoʻohana pinepine ʻia no ka hoʻolako mana o nā lako hale like ʻole e like me nā kukui, nā kumu, nā kīwī, a me nā ea hoʻoluʻu.
2. ʻO nā laina uwea ma luna, ma muli o ke kūpaʻa kiʻekiʻe o ka uea THW a me ke kūpaʻa ʻana i ka ʻaʻahu, hiki iā ia ke kū i nā kūlana ʻino loa a me nā hopena o ke kaiapuni o waho, no laila ua hoʻohana nui ʻia i nā laina uwea ma luna.
3. Nā laina uwea lalo, hiki i ka papa insulation o ka uwea THW ke pale i ka uwea mai ka hoʻopili ʻana me ka wai a i ʻole nā wahi waho ʻē aʻe, no laila hoʻohana pinepine ʻia ia i nā laina uwea lalo. Hiki i kēia uwea ke kū i ka makū a me nā wahi pulu a hiki ke pale i ka uwea mai ka pala a me ka ʻaʻahu.
Uea THW VS. Uea THWN
ʻO ka uea THW, ka uea THHN a me ka uea THWN he mau huahana uea kumu hoʻokahi. Ua like loa nā uea THW a me nā uea THWN i ke ʻano a me nā mea hana, akā hoʻokahi ʻokoʻa koʻikoʻi ma waena o lākou ʻo ia ka ʻokoʻa o ka insulation a me nā mea hana ʻaʻahu. Hoʻohana nā uea THW i ka insulation polyvinyl chloride (PVC), ʻoiai ʻo nā uea THWN e hoʻohana i ka insulation thermoplastic polyethylene (XLPE) kiʻekiʻe. Ke hoʻohālikelike ʻia me PVC, ʻoi aku ka maikaʻi o ka XLPE i ka hana, me ka pale wai maikaʻi a me ke kūpaʻa wela. ʻO ka maʻamau, hiki i ka mahana hana o ka uea THWN ke hiki i 90°C, ʻoiai ʻo ka uea THW he 75°C wale nō, ʻo ia hoʻi, ʻoi aku ka ikaika o ke kūpaʻa wela o ka uea THWN.
Uea THW VS. Uea THHN
ʻOiai ua hana ʻia nā uea THW a me nā uea THHN me nā uea a me nā papa insulation, ʻo ka ʻokoʻa o nā mea insulation e alakaʻi i kā lākou hana like ʻole ma kekahi mau ʻano. Hoʻohana nā uea THW i ka mea polyvinyl chloride (PVC), ʻoiai ʻo nā uea THHN e hoʻohana i ka resin acrylic epoxy wela kiʻekiʻe (THERMOPLASTIC HIGH HEAT RESISTANT NYLON), kahi e noho paʻa ai i nā mahana kiʻekiʻe. Eia kekahi, ʻoi aku ka palupalu o nā uea THW ma mua o nā uea THHN e kūpono i nā hiʻohiʻona noi he nui.
ʻOkoʻa nō hoʻi nā uea THW a me nā uea THHN i ka palapala hōʻoia. Hāʻawi ʻo UL a me CSA, nā kino hōʻoia hoʻohālikelike nui ʻelua ma ʻAmelika Hui Pū ʻIa a me Kanada, i ka palapala hōʻoia no nā uea THW a me THHN. Eia nō naʻe, ʻokoʻa iki nā pae hōʻoia no nā mea ʻelua. Pono ka uea THW e hōʻoia ʻia e UL, ʻoiai pono ka uea THHN e hoʻokō i nā koi o nā keʻena hōʻoia UL a me CSA.
I ka hōʻuluʻulu ʻana, he mea uea i hoʻohana nui ʻia ka uea THW, a ʻo kona hilinaʻi a me kona hoʻokele waiwai ua lilo ia i hoʻokahi o nā mea uea i makemake nui ʻia no ka ʻoihana kūkulu hale a me ka ʻoihana uila. He hana maikaʻi loa ka uea THW a hiki ke hoʻokō i nā pono o nā hanana like ʻole, e lawe mai ana i ka maʻalahi a me ka palekana i ko kākou ola a me ka ʻoihana.
Ka manawa hoʻouna: Iulai-15-2023