Designation:B502∕B502M-10v1CoWTmmASTMIniemaitonalStandardSpecificationforAluminum-CladSteelCoreWireforUseinOverheadElectricalAluminumConductors1Thisstandardi$issuedunderthefixeddesignationB5O2∕B5O2M:thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor.inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(&)indicatesaneditorialchangesincethelastrevisionorrcapproval.ε,NOTE-DesignationwascorrectededitoriallyinOctober2OI3.1.Scope1.1ThisSpeciGcationcoversround,aluminumYladsteelcorewirewithtwodesignationsoftensilestrengths,AW2(NormalStrergth)andAW3(HighStrength).1.2ThevaluesstatedineitherSlunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3.1ForconductorsizesdesignatedbyAWG,therequirementsinSIunitshavebeennumericallyconvertedfromcorrespondingvaluesstatedorderivedininch-poundunits.ForconductorsizesdesignatedbySIunitsonly,therequirementsarestatedorderivedinSIunits.2.ReferencedDocuments2.1Thefollowingdocumentsoftheissueineffectondateofmaterialpurchaseformapartofthisspecificationtotheextentreferencedherein.2.2ASTMStandards:2B193TestMethodforResistivityofElectricalConductorMaterialsE8TestMethodsforTensionTestingofMetallicMaterials3.OrderingInformation3.1Ordersformaterialunderthisspecificationshallincludethefollowinginformation;3.1.1Quantityofeachsize,3.1.2Wiresize:diameterininches(see6.1),1ThisspeciHcutionisunderthejurisdictionofASTMCommitleeBOIonElectricalConductorsandisthedirectresponsibilityofSubcommitteeBO1.06onCompositeConductors.CurrenteditionapprovedAprilI.2010.PublishedMay2010.Originallyapprovedin1970.Lastpreviouseditionapprovedin2007asB502-02(2007).DOI：10.152O∕BO5O2.BO5O2M-I0E01.3.1.3CoreWireStrength,AW2(NormalStrength)orAW3(HighStrength)(seeTable1andTable2),3.1.4Packagesize:(see17.1),3.1.5Specialpackagingandpackagemarkingifrequired(see16.1),and3.1.6Placeofinspectionifother(hanplaceofmanufacture(see14.1),4.MaterialsandManufacture4.1Thebasemetalshallbesteelproducedbytheopen-hearth,electric-furnace,orbasic-oxygenprocessandshallbeofsuchcompositionthatthefinishedcladwireBhaIlhavethepropertiesandcharacteristicsprescribedinthisspecification.4.2ThealuminumusedforcladdingshallhaveapurityandquantitySuflicienitomeetthicknessandresistancerequirementsofthisspecification(see7.1and9.1).5.TensileProperties5.1Req“力?〃ie〃As—Thealuminum-cladsteelcorewireshallconformtothetensilerequirementsprescribedinTableIandTable2.PurchasersOfcoreintendedforuseinconductorconstructionswithannealedaluminumwires,suchasACSS/AW3,ACSS∕TW∕AW3mayrequestthestrandedsteelcorebeComPIiantonlywithultimatetensilestrengthandmaywaivecompliancewiththe1%extensiontensilerequirement.ThisuseoftheultimatetensilerequirementasanalternatetotheI%extensionrequirementshallbebyagreementbetween(hepurchaserandproducerandshallbenotedonproductcompliancedocumentation.Incomputingstressat1%extensionandultimatetensilestrength,theactualdiameterofthefinishedwireshallbeused.5.2ElongationTesr-Theelongationshallbedetennɪnedbyanextensometersuitableformeasuringelongationin10.0in.[250mm]andequippedwithavernierorotherinstrumentreadingto0.001in.[0.025mm].Itshallbeat...
