Ukulandela iikhowudi zofakelo zombane ezicetyiswayo kuya kwenza ukufakela iibhokisi zombane kunye neentambo zibe lula.Musa ukufaka nje iingcingo zombane ngokuzenzekela kodwa ngokwencwadi yeKhowudi yoMbane yeSizwe.Le ncwadi yeekhowudi zokufakela yaphuhliswa ukufaka ngokukhuselekileyo zonke izinto zombane.Ukuthobela imithetho kuya kuba luncedo ukuba neengcingo zombane ezikhuselekileyo nezisebenzayo.
Ukugcina indlela eyiyo yokufakela iibhokisi zombane ezifanelekileyo kuyafuneka ngokucacileyo, uya kuba nofakelo olukhuselekileyo nolujongeka kakuhle.Iintambo zombane ezihamba ngeendonga kunye nangaphakathi nangaphandle kweebhokisi zombane kufuneka zixhaswe zombini kwaye zifakwe ubude obaneleyo bokudibanisa ngokuhambelana nale khowudi yokufakela ngokufanelekileyo kunye nokulula ukusetyenziswa.
1.Ukuqhoboshela iiCables kwi-Studding
Kwi-codebook, icandelo le-334.30 lichaza ukuba iintambo ezinqamlekileyo kufuneka zifakwe kwi-staple side ye-cable endaweni ye-edge.Oku kunika uqhagamshelo oluluqilima lwecingo kwi-stud kwaye luthintela nawuphi na umonakalo kwi-sheathing yocingo.
2.IiCables eziNgena kwiBhokisi yeReceptacle
Kufuneka ushiye ubuncinane ii-intshi ezintandathu ze-intshi ze-condactor simahla kwibhokisi yokuhlangana ngeenjongo zoqhagamshelo xa iintambo zombane zihamba ukusuka kwibhokisi ukuya kwenye.Kwinqaku 300.14, obu buchule buchazwe.
Ukuba iingcingo zimfutshane kakhulu, kunzima kakhulu ukwenza uqhagamshelo kwaye kwimeko apho kufuneka unqumle isuntswana locingo ukuphinda utshintshe isitshixo okanye i-outlet, uya kufuna ii-intshi ezimbalwa ezongezelelweyo zocingo olusebenzisekayo.
3.Ukukhusela iiCables
Inqaku le-334.30 lichaza ukuba iintambo eziphuma kwiibhokisi ze-junction kufuneka zigcinwe ngaphakathi kwee-intshi ezili-12 zebhokisi kuzo zonke iibhokisi ezixhotyiswe ngeentambo zentambo.Ezi ntambo zentambo akufanele zisuswe.I-314.17(C) ichaza ukuba iintambo kufuneka zigcinwe kwibhokisi ye-receptacle.Nangona, kwinqaku 314.17(C)'s exception, iibhokisi ezingezizo ezentsimbi azinayo icable clamps kwaye kufuneka zibe neentambo ezixhaswe phakathi kwee-intshi ezisibhozo zebhokisi yokuhlangana.Kuwo nawuphi na umzekelo, ucingo lukhuselwe ngocingo olusisiseko olulugcina lungahambi ngaphakathi kodonga.
4.Iibhokisi zokulungisa izibane
Iibhokisi zokukhanyisa izibane kufuneka zidweliswe ukuxhasa izixhobo zokukhanyisa ngenxa yobunzima bazo.Ngokuqhelekileyo, ezi bhokisi zingqukuva okanye zimile okwe-octagon.Uya kufumana olu lwazi kwinqaku 314.27(A).Njengemeko yabalandeli besilingi, unokufuna ukufaka ibhokisi ye-bracket ekhethekileyo ukunceda ukuxhasa ubunzima nokuba inokuxhasa ukukhanya okanye isilingi fan.
5.UkuXhotyiswa kweCable eHorizontileyo kunye neNqabileyo
Inqaku elithi 334.30 kunye ne-334.30(A) lichaza ukuba iintambo eziqhutywa ngokuthe nkqo mazixhaswe ngokubotshwa zonke ii-4 feet 6 intshi, nangona iintambo eziqhutywa ngokuthe tye kwimingxuma ebhorekileyo azidingi nkxaso ingaphezulu.Ngokukhusela iintambo ngale ndlela, iintambo zikhuselekile ukuba zifakwe phakathi kwee-studs kunye ne-drywall.Iziseko zocingo ezikhethiweyo zinezikhonkwane zetsimbi kunye nezixhaso ezinqamlezileyo zeplastiki endaweni yeziseko.
6.Steel Plate Protectors
Kucetyiswa kakhulu ukuba kuthathelwe ingqalelo imiba yokhuseleko xa iintambo zidlula kwimingxuma ekruqukileyo kwizikhonkwane.Ukukhusela i-wiring kwizikhonkwane kunye nezikrufu ze-drywall, inqaku le-300.4 lichaza ukuba iipleyiti zensimbi kufuneka zinikezelwe ukukhusela iintambo ezikufutshane ne-1 1/4 intshi ukusuka kumda welungu lokuqulunqa iinkuni.Oku kukhusela ucingo xa i-drywall ifakwe.Ezi kufuneka zisetyenziswe kuzo zombini umngxuma othe nkqo-othe tyaba-othe tyaba apho iipleyiti zentsimbi zigquma indawo ephambi komngxuma apho ucingo luphumela khona.
7.Iibhokisi zokuNqamisa
Inqaku le-314.20 lichaze ukuba iibhokisi kufuneka zixhonywe ngokugungxulwayo kunye nomphezulu ogqityiweyo wodonga, kunye nokubuyisela umva okungekho ngaphezu kwe-1/4 intshi.Oku kuya kuba ngumda wangaphandle we-drywall.Ukunceda kolu fakelo, iibhokisi ezininzi ziza neegeyiji ezinzulu ezenza ukufakwa kweebhokisi kube lula.Lungelelanisa nje ubunzulu obuchanekileyo kwibhokisi ukuze utshatise ubukhulu be-drywall ekufuneka ifakwe, kwaye uya kuba nebhokisi egungxulwayo.
8.Ufakelo lweeNcingo eziNinzi kwiKhobhulo
Kwinqaku 334.80, 338.10(B), 4(A), ichaza ukuba xa iintambo ezintathu okanye ngaphezulu ze-NM okanye ze-SE zifakwe kuqhagamshelwano ngaphandle kokugcina isithuba okanye zidlule kwindawo enye kumalungu okuqulunqa iinkuni ezimele zifakwe okanye zitywinwe kwaye apho ukubaleka okuqhubekayo kungaphezulu kwee-intshi ezingama-24, ubungakanani obuvumelekileyo bomqhubi ngamnye kufuneka luhlengahlengiswe ngokungqinelana neTheyibhile ye-NEC 310.15(B)(@)(A).Ukulinganisa kwakhona akuyi kufuneka xa udlula kwi-drilled stud eqhelekileyo okanye ijoist.
Ixesha lokuposa: Mar-07-2023