Requirements for Electrical Distribution for Electrical Distribution Systems 2013 California Building Energy Efficiency Standards Architectural Energy Corp. Draft

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NewSection135RequirementsforElectricalDistributionSystems2013CaliforniaBuildingEnergyEfficiencyStandardsArchitectural Energy Corp. Draft Final Report August 15 2011 James R Benya, PE Principal Investigator CONTENTS 1. METHODOLOGY................................................................................................................................................71.1BasicConcepts...................................................................................................................................71.2Structure..............................................................................................................................................71.3OtherStandards................................................................................................................................71.4CostEffectiveness............................................................................................................................82. ANA ..............................................................9LYSISANDRESULTS................................................................ 2.1IntentofProposal..............................................................Error!Bookmarknotdefined.2.2CostAnalysis.......................................................................................................................................92.3EnergySavingsAnalysis..............................................................................................................102.4MeteringProvisions......................................................................................................................113. PROPOSEDCODELANGUAGECHANGE................................................................................................123.1SummaryofProposedChanges................................................................................................123.2ProposedLanguage.......................................................................................................................144. MATERIALFORCOMPLIANCEMANUALS...........................................................................................20. BIBLIOGRAPHYANDOTHERRESEARCH............................................................................................215 Page22013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystems Page32013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsOVERVIEW Description Theproposedmeasureistorequireprovisionsinabuildingselectricaldistributionsystemthatwillensurerelativelyeasyimplementationofadvancedmeteringandcontrol,includingdemandresponseandthesmartgridTypeofChange MandatoryMeasureThischangewouldaddmandatorymeasures.(a)Requirestheadditionofmodesttotalenergyreadoutstothemeteringofservices.Therequirementsareprogressive,withsimplemeteringprovisionsupto250kVAservicesandsomeloggingcapabilitiesforlargerservices.Mostofthesearealreadyprovidedbyutilitymetersandwilleasilybepartofasmartmeter.(b)Requiresdisaggregatingtheloadtypesinanelectricalsystemsuchthatmajorloadtypescanbeeasilymeasuredatasinglepoint.Theactualmeasuringequipmentisnotrequired.(c)Requiresfeederstohavenogreaterthan2%voltagedrop,andbranchcircuitstohavenotmorethan3%voltagedrop,asrecommendedbytheCaliforniaElectricalCode2010.(d)Requiresprovidingautomaticshutoffofaboutofallreceptaclesinofficesandrelatedspacestosaveenergy.(e)Requiresallbuildingstobeenabledtoreceiveandactupondemandresponsesignals.(f)Permitsbuildingautomationsystemstoproviderequiredcontrolfunctionsofseveralsections.ThischangewouldslightlyincreasethescopeordirectionofthecurrentStandards.Thischangewouldnotrequireimplementationofsystemsorequipmentthatarenotalreadyreadilyavailableonthemarketandforuseintheproposedapplications.ThesesystemsarealreadyregulatedandincludedinthecurrentStandards.TheStandardsandManualswouldbemodifiedinordertoincludethenewrequirements.ThechangewouldrequireanewSection135. Page42013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsEnergyBenefitsParts(a),(b),(e) and(f)of thismeasureare not directlyenergysaving.Part(c)ofthemeasuresavesenergybyensuringthatelectricalfeedersandcircuitwiringaredesignedtominimizevoltagedrop.Voltagedropiswastedenergy.Part(d)ofthemeasuresavesenergybyshuttingoffreceptaclecircuitswhenaspaceisunoccupied.NonEnergyBenefitsParts(a),(b),(e)and(f)ofthismeasurerequirebasicconstructionthatwillenabletheadditionofcontrolandmeasurementtechnologiesasthetheircosteffectivenessimprovesandastheneedforcontrolandmeasurementbecomesimportantduetodemandresponse,timeofuseratesandotherfunctionsofthefuturesmartgrid.EnvironmentalImpactTherearenosignificant environmentalimpacts otherthanenergysavings. Page52013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsTechnologyMeasuresMeasureAvailabilityandCost:(a)Shouldnotresultinanymeasurablecostimpact.Thecostwillbebornebytheutilitycompanies,andthenewmetersbeinginstalledwillmeettheserequirementsatnoadditionalcosttotheowner.(b)Shouldnotresultinanymeasurablecostimpact.Thecoderequirementwoulddictatespecificwiringchoicesthatarealreadymadeonadaytodaybasis.(c)Shouldnotresultinanymeasurablecostimpact.PerArticles210and215oftheCaliforniaElectricalCode,thesevaluesarerecommendedandresponsibleengineersobservethem.Withinflationandescalatingcosts,thiscoderequirementwillpreventcostcuttingthatcausesunacceptableamountsofwastedenergy.(d)Willresultinadditionalcost.Usingconventional,offtheshelftechnology,itwilladdabout50centspersquarefoottoelectricalconstructioncosts.(e)Willaddaverysmallamountofcosttoprojects.ItwillsaveconsiderablecostlaterwhenthefullbruntofDRandthesmartgridbecomesreality.(f)Shouldnotresultinanymeasurablecostimpact.ItspurposeistoovertlystatethatmanyofthecontrolsrequirementsofSection131andothersectionscanbemetwithanenergymanagementsystem(EMS)andforwhichbasicrequirementsareaddedbythismeasure.UsefulLife,PersistenceandMaintenance:TheproposedprovisionsofnewSection135areobviousnextstepsneededtolaythefoundationforenergyflowandmeasurement.Allofthepartsandworkrequiredareconventionalelectricalconstructionwithlonglifeandpredictableperformance. PerformanceVerificationTheproposedupdatewouldrequiresomeadditionalcommissioningduringinitialinstallationofthesystembyanelectrician.Commissioningofthistechnologyisalreadystandardpracticeandiswellunderstoodbycontractors.CostEffectivenessSincemostoftheprovisionsofthismeasurehavenosignificantcostimpactandnodirectenergysavings,costeffectivenessismoot.Thecosteffectivenessofplugloadcontrolscannotbeexactlydeterminedduetolackofdata,butexamplesshowconsiderablecosteffectivenessinmanyapplications. Page62013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsAnalysisTools Nofurtheranalysishasbeenperformed. RelationshiptoOtherMeasuresTheprincipalrelationshipofthismeasuretoothermeasuresisthatplugloadcontrolcaneasilybetiedtoautomaticlightingshutoff,inessencemakingonecontrolsignalaffecttwocircuits. Page7NEWSection135ElectricalSystems2013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReport1. METHODOLOGY ThissectionsummarizeshowthisCASEreportwasdeveloped.1.1 Basic Concepts Sinceitsorigin,Title24Part6hasavoidedtopicsrelatedtoelectricalsystemsandloadsthatwerenotdirectlytiedtothestructureandbuildingenvelope.However,initspilotstudy1,theOfficeoftheFutureprojectdeterminedplugloadexceededlightingloadininCaliforniaofficebuildings.Moreover,thestudycalledattentiontotheabilitytoeasilydisaggregatelightingpowerfromplugloadandotherbuildingenergyusesifproperlyplanned.Itwasdecidedthatarelativelysimplesectioncouldrequireelectricalwiringthatproduceslogicalpointsformeasurementofenergyuse.1.2 Structure Thismeasurehasfollowingseparategroupsofproposedstandards.1. Standardsrelatedtothemetering/measurementofelectricalsystems.Theseweredeterminedtobemostlylogicalseparationsofloadsbydesign.Progressiverequirementsrelaxedtheburdenonsmallerprojects.2. Standardsrelatedtocontrollingplugloadsinofficesandrelatedspaces.Inessence,anadditionalherelaycontrolfromlocallightingon/offcontrolcouldbeinexpensivelyadoptedforaboutoftreceptaclesincommercialbuildings. 3. Standardsrelatedtodesigningelectricalsystems.VoltagedropinelectricalsystemsisenergywasteandmeetingtheCaliforniaElectricalCoderecommendations.4. Standardsrelatedtodemandresponseandbuildingautomation.Thesestepswereaddedwiththewidestpossiblerangeofacceptance,inordertoencourageimplementation.1.3 Other Standards ThemeteringprovisionswereinterpretedfromASHRAE/IES189.1.ThevoltagedropcalculationsweretakendirectlyfromtheCaliforniaElectricalCodesections210and215andareconsistentwithexistingrequirementsinIECC2009and90.12010.ThedemandresponselanguagewasdevelopedfromevolvingstandardsofCaliforniasIOUs.1SouthernCaliforniaEdison,oPod(TheOfficeoftheFuturePhase1)Report,DougAveryetal,April2007 Page8NEWSection135ElectricalSystems2013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReport1.4 Cost-Effectiveness Asstatedabove,mostofthismeasureistomakesmartprovisionsinbuildingsforthefuturesmartgridincludingDRandhaslittleornocostimpacttoabuilding.CosteffectivenesswasatleastpartlydemonstratedinotherCASEreports2andisnotrepeatedhere.WetakethepositionthatnocostisinvolvedwithrequirementstodesigningelectricalsystemstomeetvoltagedroprecommendationsoftheCaliforniaElectricalCodeasitisalreadyconsideredgoodpractice.Plugloadcontroladdscost.CosteffectivenesswasdemonstratedinanotherCASEreport3.Inaddition,limiteddata4canbeusedtofurtherjustifycosteffectiveness,usingapracticalmodelthatdemonstratescosteffectivenesswell.Itispresentedinpart2.2http://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/20110427_workshop/review/AutoDR_for_HVAC_template.pdfandhttp://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/20110404_workshop/review/Nonres_DR_lighting.pdf3http://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/20110404_workshop/review/Office_Task_Lighting_Plug_Load_Circuit_Control.pdf4SouthernCaliforniaEdison,OfficeoftheFuturePhaseIIReport,NewBuildingsInstitute,January122008http://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/2011-04-27_workshop/review/AutoDR_for_HVAC_template.pdfhttp://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/2011-04-27_workshop/review/AutoDR_for_HVAC_template.pdfhttp://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/2011-04-04_workshop/review/Nonres_DR_lighting.pdfhttp://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/2011-04-04_workshop/review/Office_Task_Lighting_Plug_Load_Circuit_Control.pdfhttp://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/2011-04-04_workshop/review/Office_Task_Lighting_Plug_Load_Circuit_Control.pdfhttp://www.energy.ca.gov/title24/2013standards/prerulemaking/documents/2011-04-04_workshop/review/Office_Task_Lighting_Plug_Load_Circuit_Control.pdf Page92013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystems2. ANALYSIS AND RESULTS 2.1 Another Look at Receptacle Switching Thisproposalrequiresapproximatelyofallreceptaclestobeautomaticallyswitchedoffinamannersimilartothecurrentautomaticshutoffrequirementsforlighting.Theintentistoreduceenergywastebydisablingpowertoreceptaclesthatserveloadsthatonlyrequireenergizingwhenthespaceisoccupied.ACASEreportbyHMGdemonstratescosteffectiveness5.Thisreportreexaminesthisproposalonapracticallevel.IntheOfficeoftheFuturephase1fieldstudy6,thesinglelargesttypeofconnectedloadbypowerdensitywasportablespaceheaters.Thesecondlargestloadtypewascomputersandrelatedperipherals,followedbylighting.Over75%oftheloadinthesethreegroupswasconnectedtoreceptacles.(Thisstudyavoidedunusualanduncommonloadssuchasserverrooms.)Moreover,thebalanceofthecommonofficeplugloads,suchaskitchenappliances,l.officeappliances,watercoolers,personalelectronics,etc.areallservedfromreceptaclesaswelItisunderstoodthatanumberofdevicesmusthaveconstantpower.Forinstance,acomputerscreencouldbeturnedoffwhenaworkerisnotpresent,butshuttingoffpowertothecomputercouldcausealossofdata.(TheITindustryhasbeenimprovingtheenergyefficiencyofequipmentformanyyearsincludingtheabilityforcomputerstosleepwithoutdataloss).Arefrigeratorrequiresconstantpoweraswelltopreservefood.ButthevastmajorityotherloadscouldtolerateeitheratemporarypowerlosssuchasmightbecausedbyDR,oranoccupancyresponsiveshutoff.Agoodexampleistheportablespaceheater.2.2 Cost Analysis Theprimarywaythismeasurewillbeimplementedwillbeinconjunctionwithalightingmotionsensor.Incommercialapplications,lightingsensorsareeitherceilingmountedtolookdownontotheareabeingcontrolled,orwallmountedtolookoutintothespacebeingcontrolled.Linevoltagesensorscontaintheswitchingcircuitrywithinandaretheleastexpensivetype.Lowvoltagesensorshaveseparatedetectionheadsandremotepowerpacks(transformerrelays)thatswitchthepower.Insmallerbuildings,thelightingisoperatedat120volts,andthesensorcouldswitchbothlightingandreceptacleswithessentiallynoaddedcostotherthanwiringfromthesensor.Inlargerbuildingswith277voltlighting,anauxiliaryrelaymustbeaddedtoswitchthe120volts.Powerpackscostabout$25.007andauxiliaryrelaysabout$205Op.cit.6oPodPhaseIreport,op.cit.7www.shop.montereycorp.com,anInternetretailstore,foraSensorswitchsinglecircuit120/277volt20Apowerpackhttp://www.shop.montereycorp.com/ Page102013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsinstallationlaborcost,makingeach.Ingeneral,installedcostwillbeabouttwicethis,soweassumetheaddedrelayisabout$50foreachspace.2.3 Energy Savings Analysis Mentionedabove,thereisnoreliabledatatopredicttheamountandtypeofloadonbuildingcircuitsfortestingthecosteffectivenessofthismeasure.Instead,wehaveconstructedamodelbasedo sfollows:ntheOfficeoftheFuturePhase1findingsandtypicalwiringpractices,a f/yrPortablespaceheaters,1.25w/sf,33%dutycycle ,energyuse3.7kWh/Personalcomputerperipherals,1.0w/sf,10%dutycycle,0.9kWh/sf/yrh/sf/yr8 s Miscellaneouspersonalloads,0.1w/sf,100%dutycycle,0.9kWTOTALPRECONTROLANNUALENERGYUSE:5.5kWh/sf/yrThesimplicityofthisanalysisdoesnotwarrantacompleteeconomicanalysis,anddatadoesnotexisttosupportit.Insteadthefollowingforeshortenedanalysisisoffered.AverageEnergyUse 5.5kWh/sf/yrAverageControlZone 150SFAverageElectricRate $.126/kWh9nergyUseandCostPerZone 825kWh,$103.95EBecausethedatabaseisverysmallandthereisnotreallyarobustdatabaseforpredictingenergyuse,wecaneasilyestimatethattheaverageoccupancywillbeabout25%oftheyear(42hoursperweek)orless.Thus,ifthismeasureweretosave75%oftheenergypresentlyusedbytheseloads,thepaybackperiodwouldbeabout9months.Conversely,eveniftheestimatesaresignificantlywrongandthemeasuresavedonly82.5kWh/yr(0.084w/sfturnedoff75%ofthe.time),thepaybackperiodwouldbelessthan5years,wellwithinthestatutoryrequirementsOneofthetwoexemptionspermitsmotionsensorplugstripsundercertainconditions.ThewholesalecostofaWattstopperIsolecontrolstationisabout$6510,whichrequiresnoitfairlyconsistentwiththisanalysis.8 ontimeoftheloadduetouseand/ortemperaturecontrols.Theoffpowerisassumednegligible.Theestimated9www.eia.govhttp://www.eia.gov/ Page11NEWSection135ElectricalSystems2013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReport2.4 Metering Provisions Theserequirementsarerepresentedashavingnosignificantcostimpact.Thatisbecausethebreakpointsinthestandardsweredeterminedonthebasisofpanelboardsizesfeedingbranchcircuits.Forexample,thefirstmajorbreakpointintherequirementsis25kVAforreceptacles(plugloads).Thiswaschosenbecause25kVAofloadcorrespondsroughlytothefullyloadedcapacityofa100amppanelboard,apracticalstandardsizethatwouldtypicallybeusedtoserveanareaof10,000sfdesignedforupto2.5w/sf.Themeteringpointisthefeedertothatpanelboard,whichwithminimalprovisionscouldeasilybeequippedinthefuture.Smallersystems,suchasforatenantretailstore,areoftenserved120/208vthreephaseserviceor120/240vsinglephaseservice.Evenwithanairconditioningsystemonthemeter,theservicesizeislikelytobeabout10VA/sf.Atthisload,aspaceofupto5,000sfcouldbeservedandonlyhavethelowestlevelofrequirements.Officeoccupancieswithoutserverfarmsorotherexcessiveloadsaremorelikelytohaveaserviceofabout5to6VA/sf,correspondingtoaspaceof10,000sf.Intheeventthatseparate277voltlightingand120voltplugloadcircuitsareusedandacentralHVACsystemisseparatelyfed,thepracticalareaforseparatelymeteredtenantscouldbeaslargeas12,000to15,000sfwiththelowestlevelofrequirements.Thisisaboutaslargeanareaaswouldbeservedfromasinglepanelduetovoltagedropandotherpracticallimits.Thenextbreakpointforservicesis50kVA,correspondingtoabout150ampsat120/208voltsthreephaseand200ampsat120/240voltssinglephase.ThiswillrequireseparatesubpanelsforlightingandreceptaclesaswellasseparatefeedersforHVACandbiggerloads.Fora20,000sfgrocerystore,forexample,theservicesizemightbe100kVA,anditwouldhaveconnectedlightingloadsofabout30,000watts,plugandmiscellaneousloadsofabout10,000watts,HVACloadsofabout30,000watts,andrefrigerationandequipmentloadsofabout30,000watts.Eachgroup(exceptplugloads)wouldbeatleast100ampsat120/208or120/240volts.Thesearepracticalsizesforpanelsandfeeders.Largerbuildingsnaturallybreakrisersystemsdowninto100or200ampgroups.Thisprovisionrequiresaspecificorganizationandinsomecasesmayaddsomecost,butitwillbenegligible.10Actualcostofcomponents,OfficeoftheFutureprojectatLAFederalBuilding,spring2011. Page122013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystems3. PROPOSED CODE LANGUAGE CHANGE Thissectiondescribesthespecificrecommendedlanguage.3.1 Summary of Proposed Changes Weproposesixspecificsections.(a)Requiretheadditionofmodesttotalenergyreadoutstothemeteringofservices.Therequirementsareprogressive,withsimplemeteringprovisionsupto250kVAservicesandsomeloggingcapabilitiesforlargerservices.Mostofthesearealreadyprovidedbyutilitymetersandwilleasilybepartofasmartmeter.Thiswillallowbuildingownersandmanagerstoeasilymakesimplereadingsofhowmuchenergytheyareusing.Forlargersystems,itwillallowelectricenergyusetobemonitoredonanhourly,daily,ormonthlybasis.(b)Requiredisaggregatingtheloadtypesinanelectricalsystemsuchthatmajorloadtypescanbeeasilymeasuredatasinglepoint.Theactualmeasuringequipmentisnotrequired.Thiswillallowfuturemeteringofsystemstobeinstalledatthelowestpossiblecostandwiththemostease.(c)Requirefeederstohavenogreaterthan2%voltagedrop,andbranchcircuitstohavenotmorethan3%voltagedrop,asrecommendedbytheCaliforniaElectricalCode2010.Whilethisisconsideredtobegoodpracticeandcurrentlyoccursinmostbuildings,thiscoderequirementwillensurethatfutureprojectsarenotmadelessefficientduetocostcuttinginelectricaldistribution.(d)Requireprovidingautomaticshutoffofsomereceptaclestosaveenergy.Thelowcostofmotionsensingdevicesmakesthisarelativelyinexpensiveandeasymeasure.Whethersharingasensorwithlightingusingaseparateauxiliaryrelay,orprovidingamotionsensorfortheareasreceptaclesalone,thismeasureshouldnotaddmorethanabout50centspersquarefoottothecostofanofficebuildingorsimilaruses,andlesstoschools,retailandotheruseswithlessplugloadandpluguse.(e)Requiresallbuildingstobeenabledtoreceiveandactupondemandresponsesignals.Thispreparesbuildingsforcommunicationstothesmartgrid.Thecostisverysmall,butitensuresthatthethoughtwasputintothedesignofthebuildingsuchthatfutureoutfittingofacommunicationsystemanditsimplementationwillbelowcostandeasytodo.(f)Permitsbuildingautomationsystemstoproviderequiredcontrolfunctionsofseveralsections. Page132013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsThisclarifiesthatabuildingautomationsystemwithcertainminimumfeaturesmaybeusedtoachievetherequiredcontroloflightingandotherbuildingsystems.Itisaddedtoencouragedesignersandownerstoinvestigatesystemsthatwillpermithigherlevelsofcontrolandnteroperabilityinanticipationofdemandresponse,timeofusepricingandthesmartgrid.i Page142013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystems3.2 Proposed Language SEC RICALPOWERDISTRIBUTIONSYSTEMS(a) ServiceMeteringEachelectricalserviceshallhavepermanentlyinstalleduseraccessiblemeteringoftotalelectricalenergTION135ELECTyuseperTable135A.EXCEPTIONtoSection135(a)BuildingsforwhichtheutilitycompanyprovidesameterforoccupantoruserusethatindicatesinstantaneouskWdemandandkWhforauserresettableperiod.(b)DisaggregationofElectricalCircuits.ElectricalpowerdistributionsystemsshallbedesignedtopermitthedisaggregatedmeasurementofelectricalloadenergyusesdownstreamfromtheservicemeteraccordingtoTable135B.Additiveandsubtractivemethodsmaybeusedtodetermineaggregateanddisaggregatedenergyuse.Thismaybeaccomplishedbyanyofthefollowingmethods:1. Separateswitchboards,motorcontrolcenters,orpanelboardstowhichareconnectedonlytherequiredloadorgroupofloads;or,2. Subpanelsoftheabovetowhichareconnectedonlytherequiredloadorgroupofloadsandforwhichthesubpanelloadcanbeindependentlymeasuredinaggregate;or3. Branchcircuits,tapsordisconnectsrequiringovercurrentprotectiondevicesrated60amperesorgreater.EXCEPTIONtoSection135(b)Buildingsforwhichacompletemeteringandmeasurementsystemisprovided.(c) ltageDroVo p1.Feeders.Feederconductorsshallbesizedforamaximumvoltagedropoftwopercentatdesignload.2.BranchCircuits.Branchcircuitconductorsshallbesizedforamaximumvoltagedropofthreepercentatdesignload.EXCEPTIONtoSection135(c):Feederconductorsandbranchcircuitsthatarededicatedtoemergencyservices.(d)CircuitControlsfor120VoltReceptacles.Inallbuildings,bothcontrolledanduncontrolled120voltreceptaclesshallbeprovideineachprivateoffice,openofficearea,receptionlobby,conferenceroom,kitchen,andcopyroom,toautomaticallyshutofftasklightingandotherplugloadswhentheareaisnotoccupied.Controlledreceptaclesshallmeetthefollowingrequirements: Page15dardsDRAFTFinalReportNEWSection135ElectricalSystems2013CaliforniaBuildingEnergyEfficiencyStaninstalledasthatlightingcontroldeviceorsystemforcompliancewithTitle24,Part6.2. AnEMCSwhichataminimumprovidesthefunctionalityofathermostat,includingtwostage,electronic,andsetbackthermostatscoveredinSections144and149;meetstheacceptancetestrequirementsinSection134forthatthermostat,meetsthespecificapplicationrequirementsforthatthermostatinTitle24,Part6,maybeinstalledasthatthermostatforcompliancewithTitle24,Part6.1. Electriccircuitsservingcontrolledreceptaclesshallbeequippedwithautomaticshutoffcontrolscomplyingwiththerequirementsinsection131(c);and2. Atleastonecontrolledreceptacleshallbeinstalledwithin6feetfromeachuncontrolledreceptacleorasplitwiredduplexreceptaclewithonecontrolledandoneuncontrolledreceptacleshallbeinstalled;and3. Controlledreceptaclesshallhaveapermanentmarkingtodifferentiatethemfromuncontrolledreceptacles,and4. Foropenofficeareas,controlledcircuitsshallbeprovidedandmarkedtosupportinstallationandconfigurationofofficefurniturewithreceptaclesthatcomplywithsection131(a)1,2,and3;and5. Pluginstripsandotherplugindevicesthatincorporateanoccupancysensorshallnotbeusedtocomplywiththisrequirement.EXCEPTION1toSection135(d):Inopenofficeareascontrolledcircuitreceptaclesarenotrequired,ifattimeofpermitworkstationsareinstalled,andeachworkstationisequippedwithalocalmotionsensorthatcontrolsapowerstripthatispermanentlymarkedtodifferentiatecontrolledfromuncontrolledreceptacles.EXCEPTION2toSection135(d):Receptacleswhichareonlyforthefollowingspecificpurposes:refrigerators,waterdispensers,kitchenappliances,clocks,networkcopiers,faxmachines,A/Vanddataequipmentotherthanpersonalcomputers,andreceptaclesoncircuitsratedmorethan20amperesareexemptfromthissections.(e)DemandResponseSignals.Demandresponsesignalsshallconformtoanationallyrecognizedopencommunicationstandard.AcceptablestandardsincludethosedefinedbygroupssuchastheOrganizationfortheAdvancementofStructuredInformationStandards(OASIS),EnergyInteroperationTechnicalCommittee(alsoknownasEnergyInterOpandOpenADR)ortheZigBeeAlliance(alsoknownasSmartEnergyprofile).(f) EnergyManagementControlSystem(EMCS).1. AnEMCSwhichataminimumprovidesthefunctionalityofaspecificlightingcontroldeviceorsystemcoveredinSection119;meetstheacceptancetestrequirementsinSection134forthatlightingcontroldeviceorsystem,meetsthespecificapplicationrequirementsforthatlightingcontroldeviceorsysteminTitle24,Part6,maybe Page162013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsTABLE135AMINIMUMREQUIREMENTSFORMETERINGOFELECTRICALLOADMeterType Servicesrated50kVAorlessServicesratedmorethan50kVAandlessthan250kVARequiredServicesratedmorethan250kVAandlessthan1000kVAServicesratedmorethan1000kVAInstantaneous(atthetime)kWdemandHistoricalpeakdemandRequired Required Required(kW)NotrequirediredNotrequired Required RequiredResettablekWhkWhperrateperiodRequNotrequiredRequiredNotrequiredRequiredNotrequiredRequiredRequired Page172013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsTABLE135BMINIMUMREQUIREMENTSFORSEPARATIONOFELECTRICALLOAD Page182013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsLoadType Servicesrated50kVAorlessServicesratedmorethan50kVAandlessthan250kVAAlllightinginaggregateServicesratedmorethan250kVAandlessthan1000kVAAlllightingdisaggregatedbyfloor,typeServicesratedmorethan1000kVALightingincludingexitandegresslightingandexteriorlightingNotrequiredorareaAllHVACinaggregateandeachHVACloadratedatleast50kVAAlllightingdisaggregatedbyfloor,typeorareaAllHVACinaggregateandeachHVACloadratedatleast50kVAHVACsystemsandcomponentsincludingchillers,fans,heaters,furnaces,packageunits,coolingtowers,andcirculationpumpsassociatedwithHVACDomesticandservicewatersystempumpsandrelatedsystemsNotrequired AllHVACinaggregateandcomponentsPlugloadincludingappliancesratedlessthan25kVANotrequired AllloadsinaggregateAllloadsinaggregateAllloadsinaggregateNotrequired AllplugloadinaggregateGroupsofplugloadsexceeding25kVAconnectedloadinanarealessthan5000sfAllplugloadseparatedbyfloor,typeorareaGroupsofplugloadsexceeding25kVAconnectedloadinanarealessthan5000sfAllloadsinaggregateAllplugloadseparatedbyfloor,typeorareaAllgroupsofplugloadsexceeding25kVAconnectedloadinanarealessthan5000sfAllloadsinaggregateElevators,escalators,movingwalks,andtransitsystemsOtherindividualnonHVACloadsorappliancesrated25kVANotrequired AllloadsinaggregateNotrequired All Each Each Page192013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystemsorgreaterIndustrialandcommercialloadcenters25kVAorgreaterincludingtheatricallightinginstallationsandscommercialkitchenRenewablepowerNotrequired All Each Eachsource(netortotal)LoadsassociatedwithrenewablepowerEachgroup Eachgroup Eachgroup EachgroupsourceChargingstationsforlectricvehiclesNotrequired AllloadsinaggregateAllloadsinaggregateAllloadsinaggregateeAllloadsinaggregateAllloadsinaggregateAllloadsinaggregateAllloadsinaggregate Page202013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystems4. MATERIAL FOR COMPLIANCE MANUALS WewilldevelopmaterialforthecompliancemanualsinthefinalCASEreportoncetheproposedcodelanguagehasbeenapprovedbytheCommission.Inthissection,wewillprovideinformationthatwillbeneededtodeveloptheResidentialand/orNonresidentialComplianceManuals,including: Possiblenewcomplianceformsorchangestoexistingcomplianceforms. ExamplesofhowtheproposedStandardschangeappliestobothcommonandoutlyingsituations.UsethequestionandanswerformatusedinthecurrentResidentialandNonresidentialComplianceManuals. Manual.Anyexplanatorytextthatshouldbeincludedinthe Anydatatablesneededtoimplementthemeasure. Page212013CaliforniaBuildingEnergyEfficiencyStandardsDRAFTFinalReportNEWSection135ElectricalSystems5. BIBLIOGRAPHY AND OTHER RESEARCH ASHRAE/IES90.12010,Chapter10IECC2009,Chapter5ASHRAE/IES189.1,Chapter7aliforniaElectricalCode2010,Sections210and215C1. METHODOLOGY 1.1 Basic Concepts1.2 Structure1.3 Other Standards1.4 Cost-Effectiveness 2. ANALYSIS AND RESULTS 2.1 Another Look at Receptacle Switching2.2 Cost Analysis2.3 Energy Savings Analysis2.4 Metering Provisions3. PROPOSED CODE LANGUAGE CHANGE3.1 Summary of Proposed Changes3.2 Proposed Language4. MATERIAL FOR COMPLIANCE MANUALS 5. BIBLIOGRAPHY AND OTHER RESEARCH

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