ANSI NEIS 169-2010 Standard for Arc-Fault Circuit Interrupters (AFCIs) and Ground-Fault Circuit Interrupters (GFCIs).pdf

1、An AmericAn nAtionAl StAndArdNECA 169-2010Standard fornullnullnullult Cirnullit nullterrunullers nullnullnullnulland nullound-nullult Cirnullit nullterrunullers nullnullnullnullnullnullished nullnulltional nullenullrinulll Contranullors nullsonullationTStandardforInstallingandMaintainingArc-FaultCir

2、cuitInterrupters(AFCIs)andGround-FaultCircuitInterrupters(GFCIs)NECA 169-2010An AmericanNational StandardPublishedbyNationalElectricalContractorsAssociationiii a73Foreword .v1. Scope 11.1 ProductsandApplicationsIncluded 11.2 ProductsandApplicationsExcluded11.3 RegulatoryandOtherRequirements .12. Def

3、initions 23. NEC Requirements for AFCIs and GFCIs 43.1 AFCIRequirementsinthe2008NationalElectricalCode 43.2 GFCIRequirementsinthe2008NationalElectricalCode 54. Installing AFCIs and GFCIs .84.1 General .84.2 ElectricalSafety 94.3 InstallingCircuitBreaker-TypeAFCIsandGFCIsinaDe-EnergizedPanelboard 94.

4、4 InstallingCircuitBreaker-TypeAFCIsandGFCIsinanEnergizedPanelboard .104.5 InstallingGFCIReceptacles .105. Testing AFCIs and GFCIs 125.1 General .125.2 TestingAFCIandGFCICircuitBreakers .125.3 TestingGFCIReceptacles 13Annex A: Troubleshooting AFCIs, GFCIs, Fixed Wiring and Appliances 14A1 Troublesho

5、otingGFCIs .14A2 TroubleshootingAFCIs14A3 TroubleshootingAFCIsusingGFCIs 15A4 TroubleshootingFixedWiringandAppliances15Annex B: Reference Standards .17Table of Contentsv a73NationalElectricalInstallationStandardsareintend-edtoimprovecommunicationamongspecifiers,pur-chasers,andsuppliersofelectricalco

6、nstructionser-vices. Theydefineaminimumbaselineofqualityandworkmanshipforinstallingelectricalproductsandsystems. NEISareintendedtobereferencedincontractdocumentsforelectricalconstructionpro-jects.Thefollowinglanguageisrecommended:Arc-FaultCircuitInterrupters(AFCIs)andGround-FaultCircuitInterrupters(

7、GFCIs)shouldbeinstalledandmaintainedinaccor-dancewithNECA169-2010,StandardforInstallingandMaintainingArc-FaultCircuitInterrupters(AFCIs)andGround-FaultCircuitInterrupters(GFCIs)(ANSI).UseofNEISisvoluntary,andtheNationalElectricalContractorsAssociationassumesnoobligationorlia-bilitytousersofthispubli

8、cation. Existenceofastandardshallnotprecludeanymemberornon-memberofNECAfromspecifyingorusingalternateconstructionmethodspermittedbyapplicableregu-lations.Thispublicationisintendedtocomplywiththeedi-tionoftheNationalElectricalCode(NEC)ineffectatthetimeofpublication. Becausetheyarequalitystandards,NEI

9、SmayinsomeinstancesgobeyondtheminimumrequirementsoftheNEC. Itistheresponsibilityofusersofthispublicationtocomplywithstateandlocalelectricalcodeswheninstallingelectricalproductsandsystems.Suggestionsforrevisionsandimprovementstothisstandardarewelcome. Theyshouldbeaddressedto:NECAStandards&Safety3Beth

10、esdaMetroCenter,Suite1100Bethesda,MD 20814(301)215-4521Telephone(301)215-4500Faxwww.neca-neis.orgneisnecanet.orgTopurchaseNationalElectricalInstallationStandards,contacttheNECAOrderDeskat(301)215-4504tel,(301)215-4500fax,ororderdesknecanet.org. NEIScanalsobepurchasedin.pdfdownloadformatfromwww.neca-

11、neis.org/standards.Copyright2010,NationalElectricalContractorsAssociation. Allrightsreserved. Unauthorizedreproductionprohibited.NationalElectricalInstallationStandards,NEIS,andtheNEISlogoaretrademarksoftheNationalElectricalContractorsAssociation. NationalElectricalCodeandNECaretrademarksoftheNation

12、alFireProtectionAssociation,Quincy,Massachusetts.CoverphotobyNECA.Foreword(Thisforewordisnotapartofthestandard)1 a73Thisstandarddescribestheinstallationandmainte-nanceproceduresforArc-FaultCircuitInterrupters(AFCIs)andGround-FaultCircuitInterrupters(GFCIs).1.1ApplicationsIncludedThisstandardcoversth

13、einstallationandmainte-nanceofArc-FaultCircuitInterrupters,AFCIs,andGround-FaultCircuitInterrupters,GFCIs,perma-nentlyinstalledonbuildingpremiseswiringsystemsforresidential,commercial,andindustrialapplica-tions.Itappliesto:a)CombinationTypeAFCIsfornewinstallationsb)Branch/FeederTypeAFCIsonlyforrepla

14、cementpurposesinexistinginstallationsc)GFCIsforneworexistinginstallations1.2ApplicationsExcludedThisstandarddoesnotcoverolderdesignsofGFCIs,orGFCIsdesignedtobetemporarilyconnectedtopremisewiringsystems.Itdoesnotapplyto:a)Temporaryinstallationsb)PortableorcordAFCIsandGFCIsc)AFCIsandGFCIsrequiredinmob

15、ilehomes,manufacturedhomes,ormobilehomeparksd)AFCIsrequiredincord-and-plugconnectedairconditioningunits1.3RegulatoryandOtherRequirementsa) AllinformationinthispublicationisintendedtoconformtotheNationalElectricalCode(ANSI/NFPAStandard70). InstallersshouldalwaysfollowtheNEC,applicablestateandlocalcod

16、es,andmanufacturersinstructionswheninstallingandmaintainingAFCIsandGFCIs.b) Onlyqualifiedpersonsfamiliarwiththeconstruc-tionandoperationofAFCIsandGFCIsshouldper-formtheworkdescribedinthispublication.AllworkshouldbeperformedinaccordancewithNFPA70E,StandardforElectricalSafetyintheWorkplace.c) Generalr

17、equirementsforinstallingelectricalproductsandsystemsaredescribedinNECA1-2006,StandardPracticesforGoodWorkmanshipinElectricalConstruction(ANSI).OtherNationalElectricalInstallationStandardsprovideadditionalguidanceforinstallingparticulartypesofelectricalproductsandsystems. AcompletelistofNEISisprovide

18、dinAnnexB.1. Scopea73 2Arc Thedischargeofelectricityoveraninsulatingmedium,suchasair.Arc-FaultCircuit AdeviceintendedtoprovideInterrupter protectionfromtheeffectsof(AFCI) arc-faultsbyrecognizingchar-acteristicsuniquetoarcingandbyfunctioningtode-energizethecircuitwhenanarc-faultisdetected. AFCIsarera

19、ted15Aand20A,120Vand120/240V.Branch/Feeder AnAFCIthatisintendedtobe(TypeAFCI) installedattheoriginofthefeederorbranchcircuitandprovideshighcurrent“parallel“arcingprotectionoffeederandbranch-circuitwiring. Abranch/feedertypeAFCIcanbeacircuitbreaker-typeAFCIinstalledinthepanelboard,oranAFCIdeviceinsta

20、lledinitsownenclosuremountedatornearthepanelboard.CircuitBreaker- AnAFCIthatisintegratedintoTypeAFCI acircuitbreakerthatisdesignedforinstallationinapanelboard.Acircuitbreaker-typeAFCIprotectsthecircuitbydiscon-nectingthecircuitforarc-faults,overloads,andshort-circuits.CircuitBreaker- AGFCIthatisinte

21、gratedintoTypeGFCI acircuitbreakerthatisdesignedforinstallationinapanelboard.Acircuitbreaker-typeGFCIprotectsthecircuitbydiscon-nectingthecircuitforoverloadsandshort-circuits,andprotectspersonnel(perUL943)orequipment(perUL1053)bydisconnectingthecircuitforground-faultsoccurringany-whereonthecircuitdo

22、wn-streamofthedevice.Combination- AnAFCIintendedtocomplyTypeAFCI withtherequirementsforbothbranch/feedertypeAFCIsthatprotectdownstreamfeederandbranchcircuitwiring,andout-letcircuitAFCIsthatprotectcordsetsandpower-supplycords.Dead-FrontGFCI AGFCIthatisdesignedtobeinstalledinanoutletboxwith-outanyrece

23、ptaclecontactpoints. Adead-frontGFCIisintendedtoprovideground-faultprotectionofpersonnelinbranchcircuitwiringconnecteddownstreamofthedevice.2. DefinitionsGround-Fault CircuitrydesignedtoprotectCircuitInterrupter equipmentfromdamage(per(GFCI) UL1053)orpersonnelfromelectrocutionwhencontactbetweenalive

24、partofthepro-tectedcircuitandgroundcausescurrenttoflowthroughthebody(perUL943). AGFCIcontinuallymonitorstheflowofcurrentonthephaseandneu-tralconductorsanddisconnectsthecircuitwithnointentionaltimedelaywhenacurrentimbalancebetweenthephaseandneutralconductorsisequaltoorhigherthanthecalibrationpoint(4m

25、Ato6mA)flowsfromtheprotectedcircuittoground.Outlet Apointonthewiringsystematwhichcurrentistakentosupplyutilizationequipment.OutletCircuit AnAFCIthatisintegratedintoAFCI areceptaclethatisdesignedforinstallationatabranch-circuitoutlet,suchasatanoutletbox,andisintendedtoprovidepro-tectionofcordsetsandp

26、ower-supplycordsconnectedtoitagainsttheeffectsofarc-faults.AreceptacleoutletAFCImayprovidefeed-throughprotectionofthecordsetsandpower-sup-plycordsconnectedtodown-streamreceptacles.Receptacle-Type AGFCIthatisintegratedintoaGFCI receptaclethatisdesignedforinstallationatabranch-circuitoutlet,suchasatan

27、outletbox,andisintendedtoprovideground-faultprotectionofper-sonnelincordsets,power-sup-plycords,andbranchcircuitwiringconnecteddownstreamofthedevice.Standardfor InstallingandMaintainingArc-FaultCircuitInterrupters (AFCIs)and NECA 169Ground-FaultCircuitInterrupters(GFCIs)3 a733.1 AFCIRequirementsinth

28、e2008NationalElectricalCodeManyelectricalappliancesanddevicescreatearcsduringnormaloperation,suchassnapswitches,con-tactors,motorswithbrushes,etc. Unintentionalarcsorarc-faultscanleadtoelevatedtemperaturesandsparkingthatcanignitecombustiblematerialsincloseproximitytotheheating. Causesofarc-faultsinc

29、lude: Crackedconductorinsulationduetonaturalaging. Overheatedconductorsfromexposuretosun-lightorsourcesofheat. Overloadedconductors. Looseorimproperconnectionsandtermina-tions. Damagedconductorinsulationfromfastenerssuchasstaples,nails,andscrewsdrivenintotheconductor. Damagedconductorsatstresspoints

30、suchascordscaughtunderdoorsorfurniture,orobjectspushedagainstplugsinanoutlet. Faultyelectricalequipment.Concealedelectricalfirescausedbyarc-faultscanspreadrapidly,delayingdetectionbysmokealarmsandreducingthechancesofsurvival.AFCIsareintendedtoprovideprotectionfromearlydetectionofarc-faults. AFCIcirc

31、uitrydifferentiatesbetweenarcsfromnormalequipmentoperationandarc-faults.TherequirementstoinstallAFCIsinnewlycon-structeddwellingunitsdependonwhicheditionoftheNationalElectricalCodehasbeenadoptedforregulatoryuseinthatjurisdiction.3.1.1 AFCIs Requireda) Listed,combination-typeAFCIsmustbeinstalledindwe

32、llingunitstoprotecteachsingle-phase120Voltbranchcircuitrated15Aand20AthatsupplyoutletsinthefollowingroomsNEC210.12:1. Familyrooms2. Diningrooms3. Livingrooms4. Parlors5. Libraries6. Dens7. Bedrooms8. Sunrooms9. Recreationrooms10. Closets11. Hallways12. SimilarroomsorareasTocomplywithNEC210.12,outlet

33、sforreceptacles,lights,fans,windoworwallairconditioners,singleandmultiplestationsmokealarms,spaceheaters,etc,musthaveAFCIprotection.b) Branchcircuitsinguestrooms/suitesinhotels,motels,dormitories,etc.,thatareprovidedwithper-manentprovisionsforcookingmustcomplywiththerulesfordwellingunitsNEC210.18,me

34、aningthatAFCIsarerequiredinsimilarroomsandareasofguestrooms/suitesinhotels,motels,etc.c) ReceptacleoutletAFCIsdonotprotecttheentirebranchanddonotsatisfyNEC210.12requirements.3. NEC Requirements for AFCIs andGFCIsa73 43.1.2 AFCIs Not RequiredAFCIprotectionisnotrequiredbutnotprohibitedforthefollowingr

35、oomsorcircuitsindwellings:1. Single-phaseandthree-phase,208-and240-Voltbranchcircuits2. Bathroombranchcircuits3. Kitchenbranchcircuits4. Laundrybranchcircuits5. Branchcircuitsthatsupplyonlyoutletsinunfinishedareasofbasementsandattics.6. Branchcircuitsthatsupplyonlyoutletsinattachedstructuressuchasga

36、rages.7. Branchcircuitsthatsupplyonlyoutletslocat-edoutdoors.8. Attics.3.1.3 AFCIs Not PermittedAFCIprotectionisnotpermittedforbranchcircuitssupplyingpowersourcesfornon-power-limitedfirealarmcircuitsorpower-limitedfirealarmcircuitsNEC760.41(B)and760.121(B).3.1.4 AFCIs Recommendeda) AFCIsarerecommend

37、edtoprotecttwo-wirebranchcircuits,includingknob-and-tubewiring,andaluminumwiringinexistingdwellingunits.b) InjurisdictionswhereoldereditionsoftheNECarebeingenforced,orwheretheNECisnotadoptedforregulatoryuse,itisrecommendedthatAFCIpro-tectionbeinstalledinallnewlyconstructeddwellingunits,hotels,motels

38、,anddormitoriesfollowingthe2008NECrequirements.3.2 GFCIRequirementsinthe2008NationalElectricalCodeWhenoperatingproperly,thecurrentonthecurrent-carryingphaseandneutralconductorsofanygivenbranchcircuitisequal. Aground-faultoccurswhencircuitcurrentleakstoground,findinganalternatereturnpathbacktothesour

39、ce. GFCIsconstantlymonitortheleakagecurrentfromthecurrent-carry-ingconductorsanddisconnectthecircuitwithnointentionaltimedelayiftheleakagecurrentequalsorexceedsitstriprating.GFCIsarerequiredinareaswhereincreasedelectricalshockhazardsexist,suchaswherereceptacleoutletsarelocatedincloseproximityofsinks

40、,swimmingpools,spas,hottubs,andfountains,andareassuchaskitchens,bathrooms,outdoors,andgarages.3.2.1 GFCIs Requireda) DwellingUnits: GFCIprotectionforpersonnelisrequiredforall120Volt,single-phasereceptaclesrated15Aand20Alocatedinthefollowingloca-tionsNEC210.8:1. Bathrooms2. Garagesandaccessorybuildin

41、gsthathaveafloorlocatedatorbelowgradelevelnotintendedashabitableroomsandlimitedtostorageareas,workareas,andareasofsimilaruse3. Outdoors4. Crawlspacesatorbelowgradelevel5. Unfinishedbasementsorunfinishedroomswithinbasements6. Kitchenswherethereceptaclesareinstalledtoservethecountertopsurfaces7. Laund

42、ry,utility,andwetbarsinkswherethereceptaclesareinstalledwithin1.8m(6ft.)oftheoutsideedgeofthesink8. Boathousesandboathoistoutletsnotexceed-ing240voltsTheGFCIprotectionfor15Aand20AreceptaclebranchcircuitsrequiredbyNEC210.8ispermittedtobeprovidedbyGFCIprotectionforpersonnelonthefeederthatsuppliesthose

43、branchcircuitsNEC215.9.GuestroomsandguestsuitesthatareprovidedwithpermanentprovisionsforcookingmusthavebranchcircuitsinstalledtomeettherulesfordwellingunitsNEC210.18.b) OtherThanDwellingUnits: GFCIprotectionforpersonnelisrequiredforall120Volt,single-phasereceptaclesrated15Aand20Alocatedinthefollowin

44、glocationsNEC210.8:Standardfor InstallingandMaintainingArc-FaultCircuitInterrupters (AFCIs)and NECA 169Ground-FaultCircuitInterrupters(GFCIs)5 a731. Bathrooms2. Kitchens3. Rooftops4. Outdoors5. Sinkswherereceptaclesareinstalledwithin1.8m(6ft.)oftheoutsideedgeofthesink.6. PortableorMobileSignsc) Repl

45、acementofExistingReceptacles1. GFCIprotectedreceptaclesarerequiredwherereplacementsaremadeatreceptacleoutletsthatarerequiredtobeGFCIprotectedNEC406.3(D)(2).2. Non-grounding-typereceptaclesarepermittedtobereplacedwithGFCIprotectedreceptacles.Suchreceptaclesmustbemarked“NoEquipmentGround.” SuchGFCIpro

46、tectedreceptaclesarepermittedtoprotectgrounding-typereceptacles.Suchgrounding-typereceptaclesmustbemarked“GFCIProtected”and“NoEquipmentGround”NEC406.3(D)(3)(b)and(c).d) CommercialRepairandStorageGaragesandAircraftHangers. All120-volt,single-phase,15-and20-amperereceptaclesinstalledinareaswhereelec-t

47、ricaldiagnosticequipment,electricalhandtools,orportablelightingequipmentaretobeusedmusthaveGFCIprotectionforpersonnelNEC511.12and513.12).e) HealthcareFacilities. Allreceptaclesandfixedequipmentwithintheareaofawetprocedureloca-tionofhealthcarefacilities,suchasoperatingrooms,musthaveGFCIprotectionforp

48、ersonnelorbeservedbyanisolatedpowersystemNEC517.20(A).f) AgriculturalBuildings. All120-Volt,single-phase,15-Aand20-Ageneral-purposereceptaclesinstalledinthelocationslistedin(1)through(4)musthaveGFCIprotectionforpersonnelNEC547.5(G):1. Areashavinganequipotentialplane2. Outdoors3. Damporwetlocations4.

49、 Dirtconfinementareasforlivestockg) Elevators,Dumbwaiters,Escalators,MovingWalks,PlatformLifts,andStairwayChairliftsNEC620.85.1. Each120Volt,single-phase,15-Aand20-Areceptacleinstalledinpits,inhoistways,onele-vatorcartops,andinescalatorandmovingwalkwaysmustbeofGFCI-type.2. All120Volt,single-phase,15Aand20Arecep-taclesinstalledinmachineroomsandmachin-eryspacesmusthaveGFCIprotectionforper-sonnel.h) Appliances.1. Cord-and-plug-connectedvendingmachinesmanufacturedorre-manufacturedpriortoJanuary1,2005,mustbeconnectedtoaGFCI-protectedoutletNEC422.51.2. El