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1、附录A1,lightingswitcheswhyweneedtofollowonthefrontlines?Ifthelightingswitchisinstalledinline,althoughElectricdisconnectedwhennotlitup,butthephasediadlineisconnected,Andwhenpeoplethinkthatthelightsarenotbright,willmistakenlybelievethatthestateisinpoweroutages.Infactlampsatvariouspointstotherightvolt
2、ageis220voltsofdangerousvoltage.Ifthelightsatthedestructionofthesepeopleactuallylivetouchedthesite,whichwillresultinelectrocutionaccident.Therefore,variouslightingswitchesorsmallcapacitysingle-phasepowerswitchingequipment,onlyrodsonthefrontlinesinordertoensuresafety.2,single-phasethree-holesocket
3、showtoinstallthecorrect?Why?Typically,single-phasepowerequipment,inparticularmobileelectronicequipment,shouldusethreecoreplugsandmatchingthree-holesockets.Takingtheoutletdedicatedtotheprotectionofazero(to)jack,withtheintroductionofzeroprotection,Itwasoftentheonlyoutletendofthisholeinsidewiringsoc
4、ketheadwiththeintroductionofthezerolineAucknagendirectlyconnected,Thisisextremelydangerous.Becauseifthepowerlineisdisconnected,orthefirepower(equivalent)linesconnectedtotheanti-zero.itsshellandothermetalpartswiththepowertobringthesamevoltage,whichcouldleadtoelectricshock.Therefore,thewiringshould
5、bededicatedgroundingjackdedicatedtotheprotectionandgroundinglineconnected.Usingzeroprotection,zero-powerlinesshouldleadtospecialized,andnotthenearestoutlettointroducetheuseofzeroline.3,plasticinsulatedwirewhynodirectburiedinthewalls?(1)plasticwireinsulationprolongeduse,theagingofplasticswillbefra
6、gmented,greatlyreducethelevelofinsulation,Whentheshortcircuitoverloadorshortcircuit,themoreinsulationacceleratedthedamage.(2)Oncethewallwet,itwilltriggerlarge-scaleleakageandendangertheirpersonalsafety.(3)plasticwireinsulationdirectlyBuriedandisnotconducivetolinemaintenanceandupkeep.4,whyshouldth
7、euseofleakageprotectiondevices?Leakageprotectiondevicesknownasleakageprotectionswitches,isanewtypeofelectricalsafetydevices,anditsmainpurposeis:(1)topreventelectricalequipmentandelectricallinescausedbytheleakageofelect
