Master Electrician Exam Review Questions with Correct Answers 2025

Master Electrician Exam Review Questions
with Correct Answers 2025
ThatCportionCofCaCwiringCsystemCextendingCbeyondCtheCfinalCovercurrentCdeviceCisCcalledCthe:C-
CCORRECTCANSWERC-branchCcircuit




TheCfinalCsumCofCtheCcomputedCloads,CbasedConCtheCminimumCcodeCrequirements,CisCtheC-
CCORRECTCANSWERC-CalculatedCload




AsCcomparedCtoC#10,CaC#8CwireCofCtheCsameCIengthChasCless:C-CCORRECTCANSWERC-Resistance



OneCcircularCmilCisCtheCareaCofCaCcircleCwhoseCdiameterCis:C-CCORRECTCANSWERC-0.001Cinch



ACroundCbus-barConeCinchCinCdiameter,ChasCaCcircularCmilCareaCof:C-CCORRECTCANSWERC-1,000,000Ccm



ACcopperCwireCwithCtwiceCtheCdiameterCofCanotherCwireChasCaCcurrentCcarryingCcapacity:C-
CCORRECTCANSWERC-fourCtimesCasCgreat




TheCspecificCresistanceCofCcopperCwireC@C20°CCCinCohmsCperCcircularCmilCft.CisC-CCORRECTCANSWERC-10.4



ConductanceCofCanCelectricCcircuitCisCthatCpropertyCthatCwill:C-CCORRECTCANSWERC-permitCcurrentCtoCflow



TheCequivalentCvalueCofC0.1CmhoCisC-CCORRECTCANSWERC-1OCohms



TheCresistanceCofCcopperCwireCis:C-CCORRECTCANSWERC-directlyCproportionalCtoCitsClength



TheCportionCofCaCwiringCsystemCbetweenCaCpointCofCdistributionCandCtheCbranchCcircuitCovercurrentCdevice
CisC-CCORRECTCANSWERC-Feeder




GFCICprotectionCatCaCcarnivalCisCnotCrequiredCforCequipmentCatCcircuitCifCtheCreceptacleCisCofCtheC________
____typeC-CCORRECTCANSWERC-locking

,WhereCcablesCorCnonmetallicCracewaysCareCinstalledCthroughCbored.holesCinCjoists,Crafters,CorCwoodCmem
bers;holesCshallCbeCboredCsoCthatCtheCedgeCofCtheCholeCisCtheCnearestCedgeC-ofCtheCwoodCmember.C-
CCORRECTCANSWERC-notClessCthanC1C1/4Cin.Cfrom




ToCguardCliveCpartsCoverC50VCbutClessCthanC600V,CequipmentCisCpermittedCtoCbeC-CCORRECTCANSWERC-
locatedConCaCbalconyCaccessibleConlyCtoCqualifiedCpersons

locatedCinCaCroomConlyCaccessibleCto

qualifiedCpersons

elevatedC8CftCorCmoreCaboveCfloorCorCotherCworkingCsurface



OverheadCfeederCconductorsCshallChaveCaCminimumC__________CverticalCclearanceCoverCresidentialCprope
rtyCandCdriveways,CasCwellCasCthoseCcommercialCareasCnotCsubjectCtoCtruckCtraffic,CwhereCtheCvoltageCisCli
mitedCtoC300Cvolts-to-ground.C-CCORRECTCANSWERC-12Ft



WhereCrearCaccessCisCrequiredCtoCworkConCde-
energizedCpartsConCtheCbackCofCenclosedCequipment,CaCminimumCworkingCspaceCofChorizontallyCshallCbeCp
rovided.C-CCORRECTCANSWERC-36Cinches



WhatCisCtheCmaximumCrunClengthCofCaC18AWGCfixtureCwireCthatCisCtappedConCtoCaC20CampCbranchCcircuit?C
-CCORRECTCANSWERC-50'



WhenCtheCserviceCdisconnectingCmeansCisCaCpower-
operatedCswitchCorCcircuitCbreaker,CitCshallCbeCableCtoCbeCopenedCbyChandCinCtheCeventCofCaC-
CCORRECTCANSWERC-powerCsupplyCfailure




ConductorsCareCconsideredCoutsideCaCbuildingsCwhenCtheyCareCburiedCunderCnotClessCthanC-
CCORRECTCANSWERC-2CinCofCconcrete




InCstraightCpull,CtheClengthCofCtheCboxCshallCnotCbeClessCthan.C____timesCtheCtradeCsizeCofCtheClargestCracew
ay.C-CCORRECTCANSWERC-8

, AtCleastConeCreceptacleCoutletCshallCbeCinstalledCwithinCofCtheCtopCofCaCshowCwindowCforCeachC12ClinearCfe
etCmeasuredChorizontallyCacrossCitsClengthC-CCORRECTCANSWERC-18"



Ground-
faultCprotectionCofCequipmentCshallCbeCprovidedCfroCsolidlyCgroundedCwyeCelectricalCservicesCofCmoreCtha
nC150Cvolts-to-ground,CbutCnotCexceedingC600VCphase-
to..phaseCforCeachCserviceCdisconnectingCmeansCratedC-CCORRECTCANSWERC-1000A



ReceptacleCoutletsCinCfloorsCshallCnotCbeCcountedCasCpartCofCtheCrequired

numberCofCreceptacleCoutletsCunlessClocatedCwithinC______CofCtheCwallC-CCORRECTCANSWERC-18"



ExposedCliveCpartsCofCmotorsCandCcontrollersCoperatingCatCorCmoreCbetweenCterminalsCshallCbeCguardedCa
gainstCaccidentalCcontactCbyCenclosureCorCbyClocationC-CCORRECTCANSWERC-50V



LightingCtrackCshallCnotCbeCinstalledClessCthan______CaboveCtheCfinishedCfloorCexcept'CwhereCprotectedCfro
mCphysicalCdamageCorCwhereCtheCtrackCoperatesCatClessCthanC30CVCrms,Copen-circuitCvoltageC-
CCORRECTCANSWERC-5'




EachCgeneralCcareCareaCpatientCbedClocationCshallCbeCprovidedCwithCaCminimumCof_______receptacles,Cw
hichCcanCbeCsingle,Cduplex,CorCaCcombinationCwithCeachCduplexCcountingCasCtwoCreceptaclesC-
CCORRECTCANSWERC-4




InCaCDwellingCUnitCwhichCapplianceCisCallowedCtoChaveCaC24"CcordCwithCattachmentCgroundCplug?C-
CCORRECTCANSWERC-CombinationCRangeChood/CMicrowave



oven



AtCleast_____C125CV,CsingleCphase,C15CACorC20CA,CduplexCwithCground-
faultCcircuitCinterrupterCreceptacleCshallCbeCprovidedCinCeachCelevatorCmachineCroomCandCelevatorCmachin
eryCspace.C-CCORRECTCANSWERC-1



LightingCsystemsCcoveredCbyCArticleC411CshallChaveCaCpowerCsupplyCratedCnotCmoreCthan______andCnotCm
oreCthanC30VC-CCORRECTCANSWERC-25A