Designation:A363−03(Reapproved2014)StandardSpecificationforZinc-Coated(Galvanized)SteelOverheadGroundWireStrand1ThisstandardisissuedunderthefixeddesignationA363;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationcovershigh-strength,extra-high-strength,andutilitiesgradesofconcentriclaysteelwirestrandcomposedofthreewiresorsevenwireswithClassA,ClassB,orClassCzinccoatingsspecificallyintendedforuseasoverheadgroundwiresorstaticwiresforelectricpowertransmissionlines.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.2.ReferencedDocuments2.1ASTMStandards:A90/A90MTestMethodforWeight[Mass]ofCoatingonIronandSteelArticleswithZincorZinc-AlloyCoatingsA902TerminologyRelatingtoMetallicCoatedSteelProd-uctsB6SpecificationforZinc3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthisspecification,refertoTerminologyA902.4.OrderingInformation4.1Ordersforstrandpurchasedunderthisspecificationshallincludethefollowinginformation:4.1.1Quantityofeachsize,4.1.2Sizeandgradeofstrand(Table1),and4.1.3Classofzinccoating(Section11andTable2).4.1.4ASTMdesignationandyearofissue.5.MaterialsandManufacture5.1Thebasemetalshallbesteelproducedbyanycommer-ciallyacceptedsteelmakingprocessandshallbeofsuchqualityandpuritythatwhendrawntothesizeofwirespecifiedandcoatedwithzinc,thefinishedstrandwillhavethepropertiesandcharacteristicsprescribedinthisspecification.5.2TheslabzincwhenusedforthecoatingshallbeanygradeofzincconformingtoSpecificationB6.6.Stranding6.1Thestrandshallhavealeftlaywithauniformpitchofnotmorethan16timesthenominaldiameterofthestrand.Aleftlayisdefinedasacounter-clockwisetwistawayfromtheobserver.Strandingshallbesufficientlyclosetoen...
