JOURNEYMAN ELECTRICIAN PRACTICE TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

JOURNEYMAN ELECTRICIAN
PRACTICE TEST QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
ConductorsWwithW_____WmarkedWonWtheWinsulationWareWNOTWapprovedWforWuseWinWaWwetWlocation.W-
WANSWERWTHHN




conductorsWwithWTHHNWinsulationWareWapprovedWforWuseWinWdryWandWdampWlocationsWonlyWandWconduc
torsWwithWTHWN,WTHHW,WandWTHWWinsulationWareWrecognizedWforWuseWinWdryWandWwetWlocations.



Given:WAWone-
familyWdwellingWunitWwithWaWdemandWloadWofW200WamperesWisWsuppliedWwithWaW120/240Wvolt,Wsingle-
phase,WelectricalWsystemWfromWtheWlocalWutilityWcompany.WWhatWisWtheWMINIMUMWsizeWaluminumWTHW
WconductorsWrequiredWforWuseWasWservice-entranceWconductorsWforWthisWresidence?W-

WANSWERW4/0WAWG




one-familyWdwellingW120/240Wvolt,Wsingle-phase,Wservice-
entranceWconductorsWtoWbeWsizedWatWanWampacityWofWnotWlessWthanW83%WofWtheWserviceWrating.WTherefo
re,W200WamperesWxW83%W=W166Wamperes;WsizeW4/0WAWGWTHWWaluminumWconductorsWwithWanWallowabl
eWampacityWofW180WamperesWshouldWbeWselectedWforWthisWdwelling.



WhereWaW150WkVA,Wsingle-
phaseWtransformerWhavingWaWsecondaryWvoltageWofW120/240WisWinstalledWatWaWmulti-
familyWdwelling,WtheWfull-loadWcurrentWrating,WinWamperes,WofWtheWsecondaryWisW_____.W-
WANSWERW625Wamperes




ToWfindWtheWfull-loadWcurrentWratingWofWtheWsingle-phaseWtransformerWapplyWtheWsingle-
phaseWcurrentWformulaWasWshown:IW=W(150WkVAWxW1000)W/W240WvoltsW=W15,000/240W=W625Wamperes



WhichWoneWofWtheWfollowingWlistedWcircuitWbreakersWisWNOTWaWstandardWampereWrating?W-
WANSWERW75Wamperes




theWstandardWampereWratingsWforWfusesWandWcircuitWbreakers.WAWcircuitWbreakerWwithWanWampereWrating
WofW75WamperesWisWnotWaWstandardWampereWrating.

, TheWMINIMUMWlengthWofWfreeWconductorWtoWbeWleftWatWeachWjunctionWboxWforWtheWpurposeWofWsplicing
Wconductors,WorWmakingWconnectionsWtoWilluminaresWorWdevicesWshallWbeW_____W.W-WANSWERW6Winches




freeWconductorWisWtoWbeWleftWatWeachWjunctionWboxWforWsplicesWorWtheWconnectionWofWluminairesWorWdev
ices.WTheWintentWofWthisWruleWisWtoWensureWenoughWconductorWslackWforWtheWterminalWconnectionsWorWs
plicesWtoWbeWmadeWeasily.



InWgeneral,WoverheadWservice-dropWconductorsWshallWNOTWbeWsmallerWthanW_____.W-
WANSWERW8WAWGWcopper




overheadWservice-
dropWconductorsWtoWbeWnotWsmallerWthanW8WAWGWcopperWorW6WAWGWaluminumWorWcopper-
cladWaluminum.WDoWnotWgetWservice-
dropWconductors,WtheWoverheadWconductorsWbetweenWtheWutilityWelectricWsupplyWsystemWandWtheWservi
ceWpoint,WconfusedWwithWtheWservice-
entranceWconductors,WtheWconductorsWfromWtheWserviceWpointWfromWtheWutilityWcompanyWtoWtheWservic
eWdisconnectingWmeans.



WhenWaWgalvanizedWeye-
boltWisWtoWbeWusedWasWtheWpointWofWattachmentWforWanWelectricalWservice,WtheWNECWrequiresWtheWeye-
boltWtoWbeWinstalledWNOTWlessWthanW_____WaboveWfinishedWgrade.W-WANSWERW10Wft.



provideWadequateWverticalWclearanceWofWtheWconductorsWandWpreventWphysicalWdamageWtoWtheWconduct
orsWandWpreventWpersonsWfromWmakingWaccidentalWcontactWwithWtheWconductorsWwhichWmayWcreateWaWs
hockWhazardWorWelectrocution.WInWnoWcaseWshallWtheWpointWofWattachmentWofWtheWservice-
dropWconductorsWtoWbeWlessWthanW10Wft.WaboveWfinishedWgrade.



WhyWisWelectricalWcontinuityWrequiredWforWmetallicWconduit?W-
WANSWERWToWestablishWanWeffectiveWground-faultWpathWandWfacilitateWtheWoperationWofWtheWover-

currentWprotectiveWdevice.



ElectricalWcontinuityWisWrequiredWforWmetallicWconduitWtoWestablishWanWeffectiveWground-
faultWpathWandWfacilitateWtheWoperationWofWtheWovercurrentWprotectiveWdevice.