Imiba iye yavela kunye nezinye iimfuno ezintsha kwi-NFPA 70®, iKhowudi yoMbane yeSizwe® (NEC®), enxulumene nokukhuselwa kwe-GFCI kwiiyunithi zokuhlala.Umjikelo wohlaziyo wohlelo luka-2020 lwe-NEC lubandakanya ukwandiswa okubalulekileyo kwezi mfuno, ezithi ngoku zinwebe ukubandakanya izixhobo ukuya kuthi ga kwi-250V kwiisekethe zesebe ezilinganiswe nge-150V ukuya emhlabeni okanye ngaphantsi, kunye nemigangatho epheleleyo (egqityiweyo okanye hayi) kunye nazo zonke ezingaphandle. iindawo zokuthengisa (isixhobo okanye hayi).Akukho mathandabuzo ukuba umhloli unoxanduva olukhulu kakhulu lokuqinisekisa ukuba iimfuno ezifunyenwe kwi-210.8 zisetyenziswa ngokufanelekileyo.
Kufanelekile ukuphonononga ukuba kutheni olu hlaziyo lwenziwa kwasekuqaleni.Iimfuno ze-GFCI zihlala zifuna izizathu ezibambekayo zobuchwephesha ukukholisa iphaneli yokwenza ikhowudi ukongeza izixhobo ezitsha, izixhobo, okanye iindawo kuluhlu.Ngexesha lomjikelo wohlaziyo lwe-NEC yowama-2020, ukusweleka okuninzi kutsha nje kwachazwa njengezizathu zokuba kutheni kufuneka sandise ukhuseleko lwe-GFCI kubantu abahlala kwiindawo zokuhlala.Imizekelo yayiquka umsebenzi obanjwe ngumbane ngesakhelo esinamandla soluhlu oluneziphene;umntwana obanjwe ngumbane ngelixa erhubuluza emva kwesixhobo esomisayo efuna ikati yakhe;kunye nenkwenkwana eyathi ngaxeshanye yadibana neyunithi yokuqinisa i-AC kunye nocingo olubiyelwe ngetyathanga njengoko inqumla iyadi yommelwane isendleleni eya ekhaya kwisidlo sangokuhlwa.Ezi ziganeko zibuhlungu bezinokuthintelwa ukuba i-GFCI ibiyinxalenye yenxaki.
Umbuzo osele uphakanyisiwe ngokumalunga nemfuno ye-250V yindlela enokuthi ichaphazele ngayo i-receptacle yoluhlu.Iimfuno zokhuseleko lwe-GFCI ekhitshini azichanekanga njengoko zinjalo kwiindawo ezingezizo iindawo zokuhlala.Okokuqala, izixhobo ezifakelwe ukukhonza iikhawuntara zasekhitshini kufuneka zikhuselwe yi-GFCI.Oku akusebenzi nyani kuluhlu lwezixhobo, kuba ezo azifane zifakwe kumphakamo we-countertop.Nokuba bebekho, nangona kunjalo, ityala linokwenziwa ukuba izikhongozeli zikho ukuze zikhonze uluhlu kwaye akukho nto yimbi.Ezinye izinto zoluhlu ku-210.8(A) ezinokufuna ukukhuselwa kwe-GFCI kwimibhobho yoluhlu ziisinki, apho indawo yokwamkela uluhlu ifakwe ngaphakathi kweenyawo ezi-6 kumphezulu ongaphakathi kwengqameko yesitya sokuhlambela.Indawo yokwamkela uluhlu iya kufuna kuphela ukhuseleko lwe-GFCI ukuba ifakwe ngaphakathi kommandla we-6-foot.
Nangona kunjalo, kukho ezinye iindawo kwindawo yokuhlala apho umcimbi ulula ngakumbi, njengendawo yokuhlamba impahla.Akukho mgama unemiqathango kwezo zithuba: ukuba i-receptacle ifakwe kwigumbi lokuhlambela/indawo, ifuna ukhuseleko lwe-GFCI.Ke ngoko, izixhobo zokomisa iimpahla ngoku ziyafuneka ukuba zikhuselwe yi-GFCI kuba zikwindawo yokuhlamba impahla.Kukwanjalo nakwizindlu zangaphantsi;kushicilelo lwe-2020, iphaneli yokwenza ikhowudi isuse iziqinisekiso "ezingekagqitywa" kwiindawo ezisezantsi.Igaraji yenye indawo ebandakanya konke, kwakhona, oku kuthetha ukuba i-welders, iicompressors zomoya, kunye nasiphi na esinye isixhobo esisebenza ngombane okanye isixhobo onokuthi usifumane egaraji siya kufuna ukhuseleko lwe-GFCI ukuba intambo kunye neplagi iqhagamshelwe.
Okokugqibela, ukwandiswa kwe-GFCI efumana eyona ngxoxo ininzi kukongezwa kwangaphandle.Qaphela ukuba khange ndithi “iimpahla zangaphandle”—ezo zazisele zigqunyiwe.Olu lwando olutsha lunwenwela nakwizixhobo ezinocingo oluqinileyo ngokunjalo, ngaphandle kwezixhobo zokunyibilika kwekhephu kunye neendawo zokukhanyisa.Oku kuthetha ukuba iyunithi yecondenser ye-air conditioner kufuneka ikhuselwe i-GFCI, nayo.Nje ukuba le mfuno intsha iqalise ukuphunyezwa kufakelo olutsha, kwakhawuleza kwacaca ukuba kukho umba ngeenkqubo ezithile zokwahlulwahlulwa kwe-mini-split ezisebenzisa izixhobo zokuguqula amandla ukulawula isantya secompressor kwaye kunokubangela ukukhubeka ngokungaqhelekanga kukhuseleko lwe-GFCI. .Ngenxa yoku, i-NEC iqhuba isiHlomelo seThutyana se-Tentative kwi-210.8 (F) ukuze kulibazise ukuphunyezwa kwezi nkqubo zokwahlula-hlulwa kude kube ngumhla woku-1 kuJanuwari, 2023. Le TIA ngoku ikwinqanaba lezimvo zoluntu phambi kokuba ibuyele ikomiti yeengxoxo nentshukumo.I-TIA ikwenza kucace ukuba ikomiti isaluxhasa ukhuseleko lwezi ndawo, kodwa ifuna nje ukunika ishishini ixesha lokuphuhlisa isisombululo kulo mba kula macandelo akhethekileyo.
Ngalo lonke olu tshintsho lubalulekileyo kwiimfuno ze-GFCI, iphantse yaqinisekiswa ukuba umjikelo wohlaziyo luka-2023 uya kubona umsebenzi omninzi owenziweyo malunga nezi zixhobo zisindisa ubomi.Ukuhlala ngokukhawuleza ngencoko akuyi kunceda kuphela inkqubo yokuhlaziya ikhowudi, kuya kuba negalelo kwi-NEC yamkelwe kwiindawo ezininzi kwilizwe lonke.
Ixesha lokuposa: Sep-22-2022