Raws li cov kev cai uas muaj feem ntawm lub tebchaws hluav taws xob (NEC) hauv Tebchaws Meskas, cov txheej txheem Armorates ntawm cov hauv paus av hauv qee kis, tab sis qhov no nyob ntawm ob peb qhov tseem ceeb.
1.Conductivity ntawm Armor Txheej
Cov txheej txheem armor ntawm MC CABLE feem ntau yog ua los ntawm txhuas lossis hlau. Txawm hais tias cov ntaub ntawv no tau ua tiav, lawv cov hluav taws xob tiv thaiv yog qhov siab, tshwj xeeb tshaj yog rau cov txheej txheem hlau ua rog, uas muaj qis dua dua li tooj liab lossis cov av qeeg. Yog li ntawd, nyob rau hauv qhov kev txhaum siab tam sim no ib puag ncig, txheej armor txheej yuav tsis muaj peev xwm muab tau cov impedance qis, cuam tshuam rau kev ua haujlwm zoo.
2. Cov ntaub ntawv ntawm NEC 250.118
Raws li NEC 250.118, cov txheej txheem armor ntawm qee cov CC cov qooby tau raug lees paub tias yog kev ua si hauv txoj kev taug kev zoo tshwj xeeb thiab tuaj yeem muab txoj kev tsis sib xws. Feem ntau hais lus, MC cables nrog cov hlau txuas txuas ntxiv lossis cov chaw ua si txuas ntxiv tau lees paub ntau dua.
3.Txoj kev ntseeg siab thiab txuas ntxiv
Lub hluav taws xob txuas ntxiv ntawm cov cuab yeej ua rog thoob plaws txhua qhov ntev ntawm lub cable yog qhov tseem ceeb heev. If the cable is damaged during installation or the connector is not installed correctly, it may cause the grounding path to be interrupted, affecting safety. Yog li, NEC pom zoo cov khoom siv yuav tsum siv nyob rau ntawm lub davhlau ya nyob pob qij txha thiab txuas los xyuas kom muaj kev ntseeg ncaj ncees.
Cov Khoom Siv Hauv Av Siv ntawm Ntau Hom Mc Cable Hom
1. Tshab MC Cable: Yog tias cov pob zeb txheej ua ke nrog NEC 250.118 cov kev cai thiab raug txuas nrog, nws tuaj yeem siv ua txoj hauv kev hauv av.
2.Mored MC cable: piv txwv li, {{14 3} Cov kab ua rog feem ntau siv cov chaw ruaj ntseg ywj pheej es tsis txhob cia siab rau ntawm cov txheej txheem armor.
3.PVC Coated Mc cable:}}}}}}}}}} ated pvc tiv thaiv txheej, yog li sab hauv cov txheej txheem sab hauv feem ntau yuav tsum muaj.
Kev coj ua zoo tshaj plaws thiab cov lus pom zoo
1.Qhov chaw ntawm kev siv cov chaw nkaum ntawm kev ywj pheej hauv cov xwm txheej tseem ceeb, thiab nws raug nquahu kom xaiv MC cov xaim hluav taws xob tsis txhob cia siab rau ntawm cov txheej txheem armor rau hauv av.
2.Txhua cov hluav taws xob cov hluav taws xob. Cov neeg ua haujlwm cov neeg ua haujlwm installation yuav tsum tau sab laj txog NEC cov kev qhia tshwj xeeb thiab cov cai hauv zos ua ntej kev tsim kho kom ntseeg tau tias cov kev teeb tsa tau ua raws li cov qauv.
3.Thaum kev hloov pauv txuas rau txuas MC cable, nws yog ib qho tsim nyog siv cov txuas ntxiv nrog NEC CITS thiab ua kom muaj kev sib txuas nrog cov cuab yeej ua rog los ntawm loosening lossis tawg.
