Designation:B856−13StandardSpecificationforConcentric-Lay-StrandedAluminumConductors,CoatedSteelSupported(ACSS)1ThisstandardisissuedunderthefixeddesignationB856;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcoversroundwireconcentric-lay-strandedaluminumconductors,steelsupported(ACSS)foruseasoverheadelectricalconductors(seeExplanatoryNote1).1.2Thevaluesstatedininch-poundorSIunitsaretoberegardedseparatelyasstandard.Eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththespecification.ForconductorsizesdesignatedbyAWGorkcmilsizes,therequirementsinSIunitsarenumericallyconvertedfromthecorrespondingrequirementsininch-poundunits.ForconductorsizesdesignationbyAWGorkcmil,therequirementsinSIunitshavebeennumericallyconvertedfromcorrespondingvaluesstatedorderivedininch-poundunits.ForconductorsizesdesignatedbySIunitsonly,therequirementsarestatedorderivedinSIunits.1.2.1Fordensity,resistivityandtemperature,thevaluesstatedinSIunitsaretoberegardedasstandard.2.ReferencedDocuments2.1Thefollowingdocumentsoftheissueineffectondateofmaterialpurchaseformpartofthisspecificationtotheextentreferencedherein:2.2ASTMStandards:2B263TestMethodforDeterminationofCross-SectionalAreaofStrandedConductorsB354TerminologyRelatingtoUninsulatedMetallicElectri-calConductorsB498/B498MSpecificationforZinc-Coated(Galvanized)SteelCoreWireforUseinOverheadElectricalConduc-torsB500/B500MSpecificationforMetallicCoatedorAlumi-numCladStrandedSteelCoreforUseinOverheadElectricalConductorsB502SpecificationforAluminum-CladSteelCoreWireforUseinOverheadElectricalAluminumConductorsB549SpecificationforConcentric-Lay-StrandedAluminumConductors,Aluminum-CladSteelReinforcedforUseinOverheadElectricalConductorsB606SpecificationforHigh-Strengt...
