实用机电英语（第二版） 课件 Unit 6 Do you know how to replace a GFCI

实用机电英语（第二版）新编21世纪职业教育精品教材Contents1Areyoureadyforajobinterview?2Canyoureadtechnicaldescriptions?3Canyoureadusermanuals?4Doyouhavesafehabits?5Doyourecognizethesigns?6DoyouknowhowtoreplaceaGFCI?7Areyouskilledatwiring?8Howshouldyoudealwithanelectricshock?9Canyouliftheavythingssafely?Unit6：DoyouknowhowtoreplaceaGFCI?*

Learningwordsandexpressionsaboutsafety-awareness*

Askingadvicefromco-workers*UnderstandingthestepstoreplaceaGFCI*WritingdownthestepstocorrectlyinstallorreplacesomeappliancesContents1LEADIN2LISTENING&SPEAKING3READING

4LIFE&CULTURE01LEADINActivity1：Match-upactivityA.aGFCIB.anelectricalservicepanelC.acircuitbreakerD.areceptacleE.asolarpanelF.acircuittesterCBDEAFActivity2：FillintheblankswiththewordsprovidedinActivity1.Tapea"Don'tTouch"noteto___________.__________standsfor“Ground-FaultCircuitInterrupter”.Youshouldremovethecoverplatefromthe________________.Youcanalsousethe_______tocutoffthepower.Testthereceptaclewitha_______.Iwanttoinstalla________ontheroof.A.aGFCI

B.anelectricalservicepanelC.acircuitbreakerD.areceptacleE.asolarpanel

F.acircuittesterDABCFE02LISTENING&SPEAKINGActivity3:Listentothedialogueandgettheroughidea.LiuMingandTomhadabusymorningtoday.Listencarefullyandfindoutwhattheyhaddonethismorning.

(LiuMingandTomareplacingthesolarpanelontheroof)LiuMing:Tom,whatdoyouthinkofplacingthepolarpanelinthemiddleoftheroof？Tom:Well,inmyopinion,it’sbettertoputitonthetoprightoftheroof.LiuMing:What’sthedifference?Tom:Thesunshineisthestrongestat12:00onthetoprightoftheroof.LiuMing:Isee.Idolearnalotfromyou,Tom.(LiuMingandTomarerepairingtheair-conditionerandthewindow)Susan:Hi,comein.LiuMing:Madam,what’swrongwiththeair-conditioner?Susan:It’snotworking.Ipressedallthebuttons;itdoesn’tseemtobeworking.LiuMing:Letmecheckit.Itisshortoffreon.Iwilladdsometoit.It’sworkingnow.Susan:Alsothewindowcannotclose.LiuMing:Justpressdownonthisleverandthewindowwillclose.See?Susan:ThankyouverymuchLiuMing:Youarewelcome.

Activity3:Listentothedialogueandgettheroughidea.Activity4:RoleplayScenario:Youworkinaforeigncompany.Youandyourpartnerareworkingattheplaza.Trytotroubleshootthetechnicalproblems.Thetoiletisblocked.Thereisnohotwater.ThereissomethingwrongwiththeheaterTheservicepanelisnotworking.Usefulsentencestructures:…isn’tworking.…doesn’twork.Thereissomethingwrongwith…Whatdoyouthinksof…?Howabout/whatabout…?Inmyopinion,we’dbetter…

A:Whatdoyouthinkof…?B:Ithinkweshould…A:Howabout…?B:…A:…Activity

4:Roleplay03READINGActivity5:Learntorecognizethesigns.

BluecirclesignsshowprotectiveequipmentmustbewornActivity5:Matchthepicturestothewordsorexpressions.

Theoutletneedsreplacing.UpgradetheoutletwithanewGFCI.Turnoffthepower.ConnectwirestotheGFCIreceptacle.Removetheoldoutlet.TestGFCIandreplacethecoverplate.165342Activity6:ReadthepassageandtellthestepstoreplaceaGFCI.Upgradea2ProngOutletwithaNewGFCIGFIorGFCIisshortfor"Ground-FaultCircuitInterrupter"whichisaspecialelectricalreceptacleoroutletthatcanstopelectricalpowerwithinmilliseconds.ThefollowingarethestepstoreplaceaGFCIreceptacleinproperorder.Step1Turnoffpoweratservicepanel.Step2Removeoldoutlet.Step3ConnectwirestonewGFCIreceptacle.Step4ReinstallGFCIandcoverplateStep5TurnpowerbackontoservicepanelStep6TestGFCIreceptacleActivity

7:Reorderthesixsteps.

()ConnectwirestonewGFCIreceptacle.()ReinstallGFCIandcoverplate()Turnoffpoweratservicepanel.()TestGFCIreceptacle()Removeoldoutlet.()Turnpowerbackontoservicepanel341625Activity7:Reorderthesixsteps.Step1Turnoffpoweratservicepanel.Step2Removeoldoutlet.Step3ConnectwirestonewGFIreceptacle.Step4ReinstallGFIandcoverplateStep5TurnpowerbackontoservicepanelStep6TestGFIreceptacleActivity8RetellthestepsinEnglish.

Firstofall,______________________atservicepanel.Secondly,remove_____________________________.Andthen,__________________wirestonew______________________.Next,reinstall______________and_______________________.Afterthat,turn________________backonto_________________________.Finally,test______________________________________.turnoffpoweroldoutletconnectGFCIreceptacleGFCIcoverplatepowerservicepanelGFCIreceptacleActivity9:Readthepassageandchoosethebesttitleforit.Ifthewiresarelongenough,proceedasfollows:OnthebackoftheGFIreceptacle,you'llseefourterminals.Twoarefor"Line"andtwoarefor"Load".InsingleGFCIinstallations,weonlyusethe"Line"terminals.Connecttheblackwiretothebrasscolored"Line"terminalscrew.Connectthewhitewiretothesilvercolored"Line"terminalscrew.GentlyfoldupthewiresbackintheboxandpresstheGFIintotheoutletbox.ScrewtheGFIreceptacletotheelectricalboxtofasten.AConnectWirestoGFIReceptacleBReplaceaGFIReceptacleCTestaGFIReceptacleActivity10:Readthestatements.Telltruefromfalse.

()1.OnthebackoftheGFCIreceptacle,you'llseetwoterminals.()2.InalloftheGFCIinstallations,weusethe"Line"terminals.()3.Connecttheblackwiretothesilvercolored"Line"terminalscrew.()4.FoldupthewiresbackintheboxandpresstheGFIintotheoutletbox.()5.TheGFCIreceptacleshouldbescrewedtotheelectricalboxtofastenFFFTTActivity11:Putthewordsorexpressionsintheblanksinthepassage.A.wires; B.foldup;

C.asfollows;

D.colored; E.terminals;F.brass; G.installations; H.outletbox;

I.electricalboxIfthe________arelongenough,proceed_________:OnthebackoftheGFIreceptacle,you'llseefour________.Twoarefor"Line"andtwoarefor"Load".InsingleGFCI___________,weonlyusethe"Line"terminals.Connecttheblackwiretothe__________colored"Line"terminalscrew.Connectthewhitewiretothesilver___________"Line"ter