IKhowudi yoMbane yeSizwe (NEC) ihlaziya ixesha elinye rhoqo kwiminyaka emithathu.Kweli nqaku, siza kwazisa iinguqu ezine zomjikelo wekhowudi (uhlelo luka-2023 lwe-NEC) olunempembelelo yokukhanya ngolu hlobo lulandelayo:
UkuKhanya kweHorticultural
Ukunqanda iingozi ezithile ezinokuthi zenzeke kushishino lwezibane zezitiya, iCandelo.I-410.184 icacisa ukuba ukukhuselwa kwe-GFCI kuyadingeka apho ukukhanya kwe-horticultural kudibaniswa neentambo eziguquguqukayo zisebenzisa izihlanganisi ezihlukeneyo okanye iiplagi zokunamathisela.I-Exception entsha ivumela izixhobo zokukhanyisa ezibonelelwe ngeesekethe ezingaphezulu kwe-150V ukuba zikhuselwe ngesiphazamisi esidweliswe ngenjongo eyodwa-injongo eyodwa yomhlaba-fault circuit circuit (GFCI) ehamba nge-20mA endaweni ye-6mA.
IiNcingo kunye neZixhobo eziFakelwe Phezulu kweNdawo ezinobungozi (eziKhethiweyo).
Icandelo 511.17 linokuguqulwa okuphawulekayo njengoko ngoku lihlengahlengiswa kwakhona kwifomathi yoluhlu kunye neemfuno ezongezelelweyo zokufakwa kuluhlu kunye nezixhobo zokuqhuba izixhobo (EGCs) ezongeziweyo kumxube.Igama elithi "Iklasi I" lithatyathelwa indawo ngu "Hazardous (Classified)" kwiindawo ezintlanu, kubandakanywa nesihloko seCandelo, njengoko inkqubo yokuhlelwa kwendawo ingasasebenzisi igama elithi "Class I".Eli Candelo liphinde lihlengahlengiswe ukusuka kumhlathi omde kwizinto ezisithoba zoluhlu lokusebenziseka, kwaye iimfuno zongezwa kwiindlela ezininzi zocingo.
Izixhobo zokwamkela, izibane, kunye noTshintsho
Iimfuno zeisiphazamisi sesekethe yempazamo yomhlabaukhuselo lwezitya kwi-(A)(4) zandisiwe kulo mjikelo kwiCandelo.680.22 ukubandakanya zonke izixhobo ezifakwe kwi-60A okanye ngaphantsi ngaphakathi kwe-20 ft yodonga lwedama.Oku ngaphambili bekusebenza kuphela kwi-15A kunye ne-20A, i-125V yezixhobo.Eli Candelo lifuna ukhuseleko lwe-GFCI kwisixhobo esithile esifakwe kwindawo ephakathi kwe-5 ft kunye ne-10 ft ngokuthe tye ukusuka kwiindonga zangaphakathi zedama ngokunjalo.Ulwimi olutsha ku-(B)(4) lwandisa ukhuseleko olufunekayo ngokongeza imfuno yeSPGFCI eya kuvumela izixhobo ezisebenza ngaphezulu kwe-150V ukuya emhlabeni ukuze nazo zikhuselwe.
IiNkqubo ze-Class-2-Powered Emergency Lighting Systems
ICandelo elitsha.I-700.11 ye-Class 2 i-wiring ibonelela ngeemfuno zezi nkqubo zokukhanyisa.Eli Candelo litsha lijongana nobuchwepheshe obufana ne-PoE kunye nezinye iinkqubo zokukhanyisa ezingxamisekileyo ezisebenzisa umbane weClass 2.Eminye imithetho kule dilesi yeNqaku kwiinkqubo zombane wombane, kwaye eli Candelo litsha libonelela ngeemfuno zeenkqubo zonxunguphalo oluphantsi lombane.
Ixesha lokuposa: Apr-04-2023