Designation:D1049−98(Reapproved2022)StandardSpecificationforRubberInsulatingCovers1ThisstandardisissuedunderthefixeddesignationD1049;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoversacceptancetestingofrubberinsulatingcoversforuseasportableprotectivedevicesforprotectionofworkersfromaccidentalcontactwithliveelec-tricalconductors,apparatus,orcircuits.Itincludesinsulatorhoods,dead-endprotectors,linehoseconnectors,cableendcovers,andmiscellaneouscovers.Theelectrical,physical,andchemicalrequirementsofthisspecificationshallapplyalsotoanynewormodifiedstylesofcoversthatmaybedevelopedforspecificpurposes.1.2Threetypesofcovers,differinginchemicalandphysicalcharacteristics,areprovided,andaredesignatedasTypeI,non-resistanttoozone,andTypeIIandTypeIII,resistanttoozone.1.3Fiveclassesofcovers,differinginelectricalcharacteristics,areprovided,andaredesignatedasClass0,Class1,Class2,Class3,andClass4.1.4Fivestylesofcovers,differingindesigncharacteristics,areprovided,andaredesignatedasStyleA,StyleB,StyleC,StyleD,andStyleE.NOTE1—Becauseoftheuserequirementssomecoversaresemi-rigidandothersflexible.Theflexibledevicesshouldremainsuitablyflexibleforapplicationandremovalthroughnormaltemperaturesof−29°Cto54.5°C(−20°Fto130°F).1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.See18.2foraspecificcautionarystatement.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInt...
