Nkag siab Arc Faults thiab AFCI Protection

Lo lus "arc fault" yog hais txog qhov xwm txheej uas xoob lossis corroded thaiv kev sib txuas tsim kev sib txuas ua ke kom ua rau hluav taws xob tam sim no los yog arc ntawm cov ntsiab lus ntawm cov hlau.Koj hnov ​​​​arcing thaum koj hnov ​​​​lub teeb hloov lossis lub qhov hluav taws xob buzzing lossis hsing.Qhov arcing no txhais ua cua sov thiab tom qab ntawd muab qhov ua rau hluav taws xob hluav taws xob, qhov no ua rau cov rwb thaiv tsev nyob ib puag ncig tus neeg ua cov xov hlau.Hnov lub suab nrov tsis tau txhais hais tias qhov hluav taws kub yuav tsum tshwm sim, tab sis nws txhais tau tias muaj kev phom sij uas yuav tsum tau hais.

Arc Fault vs. Ground Fault vs Short Circuit

Cov ntsiab lus arc fault, av txhaum, thiab luv luv-circuit qee zaum ua rau tsis meej pem, tab sis lawv yeej muaj lub ntsiab lus sib txawv, thiab txhua tus yuav tsum muaj lub tswv yim sib txawv rau kev tiv thaiv.

• Kev ua txhaum ntawm arc, raws li tau hais los saum toj no, tshwm sim thaum xoob xaim sib txuas lossis cov xov hlau tsis sib haum ua rau muaj hluav taws xob lossis arcing, nws yuav ua rau muaj cua sov thiab muaj peev xwm hluav taws xob hluav taws xob.Tej zaum nws yuav yog ib qho precursor rau luv luv Circuit Court los yog hauv av txhaum, tab sis nyob rau hauv thiab ntawm nws tus kheej, ib tug arc txhaum yuav tsis kaw ib tug GFCI los yog ib tug Circuit Court breaker.Txoj kev tiv thaiv kev tiv thaiv arc faults yog AFCI (arc-fault circuit interrupter) - xws li AFCI qhov hluav taws xob lossis AFCI Circuit Court breaker.AFCIs yog npaj los tiv thaiv (tiv thaiv) kev phom sij ntawm hluav taws.
• Kev txhaum hauv av txhais tau hais tias ib hom luv luv Circuit Court uas lub zog "kub" tam sim no ua rau muaj kev sib cuag nrog hauv av.Qee zaum, qhov txhaum hauv av tau hu ua "luv-rau-hauv av."Zoo li lwm yam luv luv Circuit Court, cov xaim hluav taws xob poob qis thaum lub sijhawm ua txhaum hauv av, thiab qhov no ua rau tsis muaj kev cuam tshuam ntawm tam sim no uas yuav tsum ua rau lub voj voog tawg mus rau qhov chaw.Txawm li cas los xij, lub Circuit Court breaker yuav tsis ua haujlwm sai txaus los tiv thaiv kev poob siab, Txoj Cai Hluav Taws Xob yuav tsum muaj cov cuab yeej tiv thaiv tshwj xeeb vim li no, yog vim li cas GFCIs (qhov cuam tshuam hauv av cuam tshuam) yuav tsum tau muab tso rau hauv qhov chaw uas muaj kev txhaum hauv av feem ntau tshwm sim, xws li qhov hluav taws xob nyob ze cov kav dej lossis hauv qhov chaw sab nraum zoov.Lawv tuaj yeem kaw lub voj voog txawm tias ua ntej muaj kev poob siab vim tias cov cuab yeej no paub txog lub zog hloov sai heev.GFCIs, yog li ntawd, yog cov cuab yeej kev nyab xeeb uas feem ntau yog los tiv thaivpoob siab.
• Lub voj voog luv luv yog hais txog txhua qhov xwm txheej uas muaj zog "kub" tam sim no strays sab nraum cov kab hluav taws xob tsim thiab ua rau kev sib cuag nrog txoj hauv kev nruab nrab lossis txoj hauv av.Qhov ntws ntawm tam sim no poob nws qhov tsis kam thiab dheev nce hauv ntim thaum qhov no tshwm sim.Qhov no sai sai ua rau lub ndlwg mus tshaj lub amperage muaj peev xwm ntawm lub Circuit Court breaker tswj lub Circuit Court, uas ib txwm mus ncig ua si kom tsis txhob ntws ntawm tam sim no.

Code keeb kwm ntawm Arc Fault Protection

NEC (National Electrical Code) kho ib zaug txhua peb xyoos, nws tau maj mam nce nws cov kev cai rau kev tiv thaiv arc-fault ntawm circuits.

Dab tsi yog Arc-Fault Protection?

Lo lus "arc-fault protection" yog hais txog txhua yam khoom siv uas tsim los tiv thaiv kev sib txuas tsis raug ua rau arcing, lossis sparking.Cov cuab yeej tshawb nrhiav pom qhov hluav taws xob arc thiab tawg lub voj voog kom tiv thaiv hluav taws xob hluav taws xob.Arc-fault tiv thaiv cov cuab yeej tiv thaiv tib neeg los ntawm kev phom sij thiab yog qhov tseem ceeb rau kev nyab xeeb hluav taws.

Xyoo 1999, Txoj Cai tau pib xav kom muaj kev tiv thaiv AFCI hauv txhua qhov chaw noj mov hauv chav pw, thiab txij li xyoo 2014 mus, yuav luag txhua lub voj voog uas muab cov khoom siv dav dav hauv cov chaw nyob yuav tsum muaj kev tiv thaiv AFCI hauv kev tsim kho tshiab lossis hauv kev tsim kho tshiab.

Raws li 2017 tsab ntawm NEC, cov lus ntawm Tshooj 210.12 hais tias:

Tag nrho120-volt, ib-theem, 15- thiab 20-ampere ceg circuits muab cov khoom siv hluav taws xob los yog cov cuab yeej nruab rau hauv chav tsev chav ua noj, tsev neeg chav, chav noj mov, chav nyob, parlors, tsev qiv ntawv, dens, chav pw, sunrooms, chav ua si, txee dai khaub ncaws, txoj hauv kev, chaw ntxhua khaub ncaws, lossis chav sib xws lossis thaj chaw yuav tsum tau tiv thaiv los ntawm AFCIs.

Feem ntau, circuits tau txais kev tiv thaiv AFCI los ntawm kev tshwj xeeb AFCI Circuit Court breakers uas tiv thaiv txhua qhov hluav taws xob thiab cov khoom siv nyob rau hauv Circuit Court, tab sis qhov no tsis siv tau, koj tuaj yeem siv AFCI qhov hluav taws xob ua cov kev daws teeb meem.

Kev tiv thaiv AFCI tsis tsim nyog rau kev teeb tsa uas twb muaj lawm, tab sis qhov twg lub voj voog txuas ntxiv lossis hloov kho thaum hloov kho, nws yuav tsum tau txais kev tiv thaiv AFCI.Yog li, tus kws tshaj lij hluav taws xob uas ua haujlwm ntawm koj lub cev yuav tsum tau hloov kho lub voj voog nrog AFCI kev tiv thaiv ua ib feem ntawm txhua txoj haujlwm nws ua rau nws.Hauv cov ntsiab lus siv tau, nws txhais tau hais tias tam sim no yuav luag txhua qhov kev hloov hluav taws xob hloov hluav taws xob tam sim no nrog AFCI breakers nyob rau hauv ib qho kev txiav txim siab ua raws li NEC (National Electrical Code).

Tsis yog txhua lub zej zog ua raws li NEC, txawm li cas los xij, thov xyuas nrog cov tub ceev xwm hauv zos rau cov cai hais txog kev tiv thaiv AFCI.