Hluav taws xob Code Requirements rau Chav

Cov lej hluav taws xob yog tsim los tiv thaiv cov tswv tsev thiab cov neeg nyob hauv tsev.Cov kev cai yooj yim no yuav muab rau koj cov ntsiab lus ntawm cov kws tshuaj xyuas hluav taws xob tab tom nrhiav thaum lawv tshuaj xyuas ob qho tib si hloov kho thiab kev teeb tsa tshiab.Feem ntau cov cai hauv zos yog raws li National Electrical Code (NEC), ib daim ntawv uas qhia txog cov kev coj ua uas yuav tsum tau ua rau txhua yam ntawm daim ntawv thov hluav taws xob hauv tsev thiab kev lag luam.NEC feem ntau yog hloov kho txhua peb xyoos - 2014, 2017 thiab lwm yam - thiab qee zaus muaj kev hloov pauv tseem ceeb rau Txoj Cai.Thov nco ntsoov tias koj cov ntaub ntawv xov xwm yeej ib txwm ua raws li Txoj Cai tsis ntev los no.Cov cai yuav tsum tau teev tseg ntawm no yog raws li 2017 version.

Feem ntau cov cai hauv zos tau ua raws NEC, tab sis tuaj yeem muaj qhov sib txawv.Cov cai hauv zos ib txwm nyiam qhov tseem ceeb tshaj NEC thaum muaj qhov sib txawv, yog li thov nco ntsoov xyuas nrog koj lub tuam tsev hauv cheeb tsam rau cov cai tshwj xeeb rau koj qhov xwm txheej.

Ntau ntawm NEC suav nrog cov kev xav tau rau kev teeb tsa hluav taws xob dav dav uas siv rau txhua qhov xwm txheej, txawm li cas los xij, kuj tseem muaj cov cai tshwj xeeb rau ib chav.

Hluav taws xob Codes?

Cov lej hluav taws xob yog cov cai lossis cov cai lij choj uas txiav txim siab yuav ua li cas txuas hluav taws xob hauv tsev.Lawv siv rau kev nyab xeeb thiab tuaj yeem sib txawv rau cov chav sib txawv.Pom tseeb, cov lej hluav taws xob ua raws li National Electrical Code (NEC), tab sis cov lej hauv zos yuav tsum ua raws li thawj thiab qhov tseem ceeb.

Chav ua noj

Chav ua noj siv hluav taws xob feem ntau piv nrog txhua chav hauv tsev.Kwv yees li tsib caug xyoo dhau los, chav ua noj tej zaum yuav tau txais kev pabcuam los ntawm ib qho hluav taws xob hluav taws xob, tab sis tam sim no, chav ua noj tshiab tshiab nrog cov khoom siv hluav taws xob yuav tsum muaj tsawg kawg yog xya lub voj voog thiab ntau dua.

• Cov chav ua noj yuav tsum muaj tsawg kawg yog ob lub 20-amp 120-volt "khoom siv me" circuits ua haujlwm rau cov khoom siv hauv cov chaw countertop.Cov no yog cov khoom siv portable plug-in.
• Ib qho hluav taws xob ntau / qhov cub xav tau nws tus kheej 120/240-volt Circuit Court.
• Lub tshuab ntxhua khaub ncaws thiab cov khib nyiab pov tseg ob leeg xav tau lawv tus kheej 120-volt circuits.Cov no tuaj yeem yog 15-amp lossis 20-amp circuits, nyob ntawm qhov hluav taws xob ntawm cov khoom siv (xyuas cov chaw tsim khoom cov lus pom zoo; feem ntau 15-amps txaus).Lub tshuab ntxuav tais diav yuav tsum muaj kev tiv thaiv GFCI, tab sis cov khib nyiab pov tseg tsis muaj - tshwj tsis yog cov chaw tsim khoom tau teev nws.
• Lub tub yees thiab microwave txhua tus xav tau lawv tus kheej 120-volt circuits.Qhov ntsuas amperage yuav tsum tsim nyog rau cov khoom siv hluav taws xob;cov no yuav tsum yog 20-amp circuits.
• Txhua qhov chaw txais khoom thiab txhua qhov chaw txais khoom hauv 6 ko taw ntawm lub dab dej yuav tsum muaj GFCI-tiv thaiv.Cov khoom noj khoom haus countertop yuav tsum tsis pub ntau tshaj 4 feet sib nrug.
• Lub teeb pom kev hauv chav ua noj yuav tsum tau muab los ntawm ib qho 15-amp (yam tsawg kawg) Circuit Court.

Chav dej

Cov chav da dej tam sim no tau ua tib zoo txhais cov cai vim tias muaj dej.Nrog lawv lub teeb, cua kiv cua, thiab cov qhov hluav taws xob uas tuaj yeem siv lub tshuab ziab plaub hau thiab lwm yam khoom siv, chav dej siv ntau lub zog thiab yuav xav tau ntau tshaj ib lub voj voog.

• Lub qhov hluav taws xob receptacles yuav tsum tau muab los ntawm 20-amp Circuit Court.Tib lub voj voog muaj peev xwm muab tau tag nrho chav dej (qhov hluav taws xob ntxiv rau teeb pom kev zoo), yog tias tsis muaj lub tshuab cua sov (xws li cov kiv cua cua nrog cov cua sov ua kom sov) thiab muab lub voj voog ua haujlwm tsuas yog ib chav dej xwb thiab tsis muaj lwm qhov chaw.Xwb, yuav tsum muaj 20-amp Circuit Court rau cov khoom siv xwb, ntxiv rau 15- lossis 20-amp Circuit Court rau teeb pom kev zoo.
• Cov kiv cua uas muaj lub tshuab ua kom sov yuav tsum nyob ntawm lawv tus kheej 20-amp circuits.
• Tag nrho cov khoom siv hluav taws xob hauv chav dej yuav tsum muaj qhov cuam tshuam hauv av-circuit-interrupter (GFCI) rau kev tiv thaiv.
• Lub chav da dej yuav tsum muaj tsawg kawg yog ib qho 120-volt receptacle nyob rau hauv 3 feet ntawm sab nraud ntawm txhua lub dab dej.Duel dab dej tuaj yeem ua haujlwm los ntawm ib lub chaw txais khoom nyob nruab nrab ntawm lawv.
• Cov teeb pom kev zoo hauv chav da dej lossis chav da dej yuav tsum raug ntsuas rau qhov chaw ntub dej tshwj tsis yog tias lawv raug da dej, qhov twg lawv yuav tsum tau ntsuas rau qhov chaw ntub dej.

Chav nyob, chav noj mov, thiab chav pw

Cov chaw nyob tus qauv yog cov neeg siv hluav taws xob me me, tab sis lawv tau qhia meej txog qhov yuav tsum tau muaj hluav taws xob.Cov chaw no feem ntau tau txais kev pabcuam los ntawm tus qauv 120-volt 15-amp lossis 20-amp circuits uas tuaj yeem ua haujlwm tsis yog ib chav xwb.

• Cov chav no yuav tsum muaj qhov hloov phab ntsa tso rau ntawm ib sab ntawm lub qhov rooj nkag ntawm chav kom koj tuaj yeem teeb lub chav thaum nkag mus.Qhov kev hloov no tuaj yeem tswj tau lub teeb qab nthab, phab ntsa teeb, lossis lub chaw txais khoom rau ntsaws rau hauv lub teeb.Lub qab nthab fixture yuav tsum tau tswj los ntawm lub phab ntsa hloov es tsis yog ib tug rub saw.
• Phab ntsa receptacles yuav muab tso tsis deb tshaj 12 ko taw sib nrug ntawm tej phab ntsa.Txhua ntu phab ntsa dav dua 2 ko taw yuav tsum muaj lub chaw txais khoom.
• Chav noj mov feem ntau yuav tsum muaj qhov sib cais 20-amp Circuit Court rau ib lub qhov hluav taws xob siv rau lub microwave, chaw lom zem, lossis lub qhov rais cua txias.

Stairways

Yuav tsum tau ceev faj tshwj xeeb hauv cov ntaiv kom ntseeg tau tias tag nrho cov kauj ruam tau teeb pom kev zoo kom txo tau qhov ua tsis tiav thiab txo qhov kev phom sij uas tshwm sim.

• Peb-txoj kev hloov pauv yuav tsum tau nyob rau sab saum toj thiab hauv qab ntawm txhua lub davhlau ntawm cov ntaiv kom lub teeb tuaj yeem qhib thiab tawm ntawm ob qho kawg.
• Yog tias cov ntaiv tig ntawm qhov chaw tsaws, koj yuav tsum tau ntxiv cov teeb pom kev zoo ntxiv kom paub tseeb tias txhua qhov chaw tau teeb pom kev zoo.

Hallways

Cov cheeb tsam ntawm txoj kev hauv tsev tuaj yeem ntev thiab xav tau lub qab nthab teeb pom kev zoo.Nco ntsoov tso lub teeb pom kev txaus kom cov duab ntxoov ntxoo tsis raug pov thaum taug kev.Nco ntsoov txoj hauv kev feem ntau ua txoj hauv kev khiav thaum muaj xwm txheej ceev.

• Ib txoj hauv kev ntev dua 10 feet yuav tsum muaj qhov hluav taws xob rau kev siv dav dav.
• Peb-txoj kev hloov pauv yuav tsum tau nyob ntawm txhua qhov kawg ntawm txoj hauv kev, tso cai rau lub qab nthab teeb kom qhib thiab tawm ntawm ob qho kawg.
• Yog tias muaj ntau lub qhov rooj ua haujlwm los ntawm txoj kev hauv tsev, xws li chav pw lossis ob chav, tej zaum koj yuav xav ntxiv ib qho kev hloov plaub-txoj kev nyob ze ntawm lub qhov rooj sab nraum ntawm txhua chav.

Txee

Cov txee yuav tsum ua raws li ntau txoj cai hais txog kev sib tw thiab kev tso kawm.

• Fixtures nrog incandescent teeb qhov muag teev (feem ntau yog kub heev) yuav tsum tau ntim nrog lub ntiaj teb los yog npog thiab tsis tuaj yeem ntsia tsis pub dhau 12 ntiv tes ntawm ib qho chaw cia khaub ncaws (lossis 6 ntiv tes rau cov khoom siv rov qab).
• Fixtures nrog LED qhov muag teev yuav tsum muaj tsawg kawg yog 12 nti deb ntawm qhov chaw cia (los yog 6 ntiv tes rau kev so).
• Fixtures nrog CFL (compact fluorescent) qhov muag teev yuav muab tso rau hauv 6 nti ntawm qhov chaw cia.
• Txhua qhov chaw-mounted (tsis recessed) fixtures yuav tsum nyob rau ntawm lub qab nthab los yog phab ntsa saum lub qhov rooj.

Chav ntxhua khaub ncaws

Kev xav tau hluav taws xob ntawm chav ntxhua khaub ncaws yuav txawv, nws nyob ntawm seb lub tshuab ziab khaub ncaws yog hluav taws xob lossis roj.

• Ib chav ntxhua khaub ncaws xav tau tsawg kawg ib lub 20-amp Circuit Court rau cov khoom siv ntxhua khaub ncaws;qhov Circuit Court no tuaj yeem muab lub tshuab ntxhua khaub ncaws lossis lub tshuab ziab khaub ncaws.
• Lub tshuab ziab khaub ncaws xav tau nws tus kheej 30-amp, 240-volt circuit wired nrog plaub tus neeg xyuas pib (cov laus dua feem ntau muaj peb tus neeg xyuas pib).
• Tag nrho cov receptacles yuav tsum muaj GFCI-tiv thaiv.

Chaw nres tsheb

Raws li ntawm 2017 NEC, cov chaw tsim kho tshiab xav tau tsawg kawg yog ib qho kev mob siab rau 120-volt 20-amp Circuit Court los ua haujlwm tsuas yog lub chaw nres tsheb xwb.Qhov Circuit Court no tej zaum lub hwj chim receptacles mounted rau sab nrauv ntawm lub chaw nres tsheb thiab.

• Nyob rau hauv lub chaw nres tsheb, yuav tsum muaj tsawg kawg yog ib qho kev hloov rau kev tswj lub teeb.Nws raug nquahu kom nruab peb-txoj kev hloov pauv kom yooj yim ntawm lub qhov rooj.
• Cov chaw nres tsheb yuav tsum muaj ib lub chaw txais tsawg kawg, suav nrog ib qho rau txhua qhov chaw tsheb.
• Txhua qhov chaw nres tsheb yuav tsum muaj GFCI-tiv thaiv.

Xav tau ntxiv

AFCI cov cai.NEC xav kom tag nrho cov kab hluav taws xob rau cov teeb pom kev zoo thiab cov khoom siv hauv tsev yuav tsum muaj kev tiv thaiv arc-fault circuit-interrupter (AFCI).Qhov no yog ib daim ntawv ntawm kev tiv thaiv uas tiv thaiv sparking (arcing) thiab thiaj li yuav txo tau qhov hluav taws kub.Nco ntsoov tias qhov kev xav tau AFCI yog ntxiv rau txhua yam kev tiv thaiv GFCI yuav tsum tau - AFCI tsis hloov lossis tshem tawm qhov xav tau kev tiv thaiv GFCI.

AFCI cov cai yuav tsum tau ua feem ntau hauv kev tsim kho tshiab - tsis muaj qhov yuav tsum tau ua kom muaj qhov system uas twb muaj lawm yuav tsum tau hloov kho kom ua raws li kev tsim kho tshiab AFCI.Txawm li cas los xij, raws li xyoo 2017 NEC hloov kho, thaum cov tswv tsev lossis cov kws hluav taws xob hloov kho lossis hloov cov khoom siv tsis raug lossis lwm yam khoom siv, lawv yuav tsum tau ntxiv AFCI kev tiv thaiv ntawm qhov chaw ntawd.Qhov no tuaj yeem ua tau ntau txoj hauv kev:

• Tus qauv hluav taws xob hluav taws xob tuaj yeem hloov tau nrog AFCI Circuit Breaker tshwj xeeb.Qhov no yog ib txoj haujlwm rau ib tus kws kho hluav taws xob muaj ntawv tso cai.Ua li no yuav tsim kev tiv thaiv AFCI rau tag nrho lub voj voog.
• Ib lub chaw txais tsis tau tuaj yeem hloov nrog AFCI receptacle.Qhov no yuav muab kev tiv thaiv AFCI rau tsuas yog lub chaw txais khoom uas tau hloov pauv.
• Qhov twg GFCI tseem yuav tsum tau muaj kev tiv thaiv (xws li chav ua noj thiab chav dej), lub chaw txais khoom tuaj yeem hloov tau nrog dual AFCI / GFCI receptacle.

Tamper resistant receptacles.Txhua yam khoom siv yuav tsum yog tamper-resistant (TR) hom.Qhov no yog tsim los nrog ib tug built-in kev ruaj ntseg feature uas tiv thaiv cov me nyuam los ntawm sticking khoom rau hauv lub receptacle slots.