THWN thiab THHN yog ob qho tib si rwb thaiv tsev rau cov xov hlau siv hauv tsev thaiv. Ob hom hlau yog ua los ntawm tooj liab conductors rau cov conductivity zoo heev, nrog ib tug thermoplastic rwb thaiv tsev uas muab durability thiab yooj, thiab cov rwb thaiv tsev no pab cov hlau tiv thaiv tshav kub thiab lub cev puas tsuaj. Thiab ob qho tib si muaj lub tsho nylon sab nraud, cov nylon txheej ntxiv ib txheej ntxiv ntawm kev tiv thaiv kev puas tsuaj, tshuaj lom neeg, thiab ya raws. Feem ntau, ob qho tib si THHN thiab THWN cov xov hlau raug ntsuas rau 600 volts, uas tsim nyog siv rau hauv cov kav dej lossis kev sib tw rau cov qauv hluav taws xob feem ntau hauv cov chaw nyob, kev lag luam, thiab kev lag luam.
Qhov txawv ntawm THWN thiab THHN yog dab tsi?
THWN hlau muaj tib lub thermoplastic txheej zoo li THHN, tab sis kuj yog dej resistant. Lub "W" hauv THWN sawv cev rau dej tsis kam. THWN yog haum rau qhov chaw ntub lossis qhuav. Nws tuaj yeem tiv taus qhov kub txog li 75 degree (167 degree F) hauv qhov chaw ntub dej thiab mus txog 90 degree (194 degree F) hauv qhov chaw qhuav. THHN yog tsim rau ib puag ncig qhuav xwb. THHN tuaj yeem tiv taus qhov kub siab dua (90 degree) hauv qhov chaw qhuav. THWN feem ntau yog siv rau qhov chaw uas cov xaim tuaj yeem raug ya raws, xws li kev teeb tsa sab nraum zoov lossis hauv av, thaum THHN feem ntau siv sab hauv tsev hauv qhov chaw qhuav.