UL 2018 proposal20100226

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1、DocumentWasDownloadedByDEBBIETAMForUseByNEONLITEELECTRONIC&LIGHTING(HK)LTD10964:3/25/2010-2:57AMSubject2108February26,2010SUMMARYOFTOPICSThefollowingchangesinrequirementstotheStandardforLowVoltageLightingSystems,UL2108,arebeingproposed:1.Addexceptiontowiresizeforcon

2、ductorsinClass2orisolatedLVLEcircuits2.ReviseScopetoalignwithotherlightingstandards3.Addvoltagelimitsforadditionalwaveformsin3.174.Reviseflammabilityratingandmarkingrequirementsforrecessedhousings5.Reviserequirementsforelectronicpowerunits6.Correctreferencesinrequirementsfor

3、exposedbareconductorprotectivedevices7.Correctpreviouserrorinrequirementsforthreadedopeningsforconduit8.Expandrequirementsforcabletypesforpowerlimitedcableconnections9.RevisefireindicatormaterialforabnormalteststocorrelatewithULandCSAstandards10.Revisemarkingrequirementsford

4、ampandwetlocationluminaires11.Reviseandclarifyrequirementsforluminairesshippedseparatelyfromthepowerunit12.ClarifytitlesandscopesofPartIIandPartIV13.MiscellaneousrevisionsSTPBALLOTSANDCOMMENTSDUE:April12,2010Foryourconvenienceinreview,proposedadditionstoexistingrequirements

5、areshownunderlinedandproposeddeletionsareshownlined-out.1.AddexceptiontowiresizeforconductorsinClass2orisolatedLVLEcircuitsRATIONALEProposalsubmittedby:MichaelO’Boyle,LightolierULCOPYRIGHTEDMATERIAL–NOTAUTHORIZEDFORFURTHERREPRODUCTIONORDISTRIBUTIONWITHOUTPERMISSIONFROMULSUB

6、JECT2108-2-FEBRUARY26,2010RequirementshavebeenpublishedintheStandardforLightEmittingDiode(LED)EquipmentforUseinLightingProducts,UL8750,thatallowClass2orisolatedLVLEcircuitswiretobeofanysizeprovidedthatthecircuitsareappropriatelyseparatedfromcircuitsinvolvinghazardouspowerle

7、vels.SmallerDocumentWasDownloadedByDEBBIETAMForUseByNEONLITEELECTRONIC&LIGHTING(HK)LTD10964:3/25/2010-2:57AMsizewiresarecommonlyusedinLEDlightingproductsbecauseofthesmallscaleoftheLEDcomponentsandbecausecurrentlevelsarerelativelylow.Class2andLVLElimitedpowerlevelsar

8、enotconsideredtopresenttheriskofelectricshockorfire.Thisproposedrevisionwillcorrelatethewiresizerequ