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ELECTRICAL NCCER TEST QUESTIONS AND ANSWERS
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ELECTRICAL NCCER TEST QUESTIONS AND ANSWERS
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ELECTRICAL NCCER TEST QUESTIONSAND ANSWERS
Inaaaguardrailasystem,atheaguardrailsacanabeamadeaofaanyaofatheafollowingaEXCEPT:a-
aans✔✔ropebanding
Ifatheapotentialaacrossatheacircuitaisa48avoltsaandatheacurrentaisa5aampsathearesistanceaofat
heacircuitais:a-aans✔✔9.6aohms
AaULalistedarodatypeagroundingaelectrodeamustahaveaaaminimumalengthaof:a-aans✔✔8'
WhataisatheaMINIMUManumberaofaoverloadasensingaunitsarequiredaforaallathreeaphaseamot
ors?a-aans✔✔3
Inaaacircuitaofapureacapacitance,atheacurrentaleadsatheavoltageabyaanaangleaof:a-
aans✔✔90-degrees
Theastandardaunitaforaaameasuringatheacross-sectionalaareaaofaaawireaisathe:a-
aans✔✔circularamil
TheadrawingascaleaisaMOSTalikelyatoabeafoundainawhichaofatheafollowingadrawingalocations
?a-aans✔✔theadrawingalittleablock
ThealengthaofaaabareacopperaconductorainaaagroundaringaMUSTabeaburiedanoalessathana2.
5'abelowagradeaandawithaaalengthaofaataleast:a-aans✔✔20aft.
Whenainstallingaheatingacablesaforaanti-icingasystems,acableapattersashouldabeainaa:a-
aans✔✔Serpentine
Anaauxiliaryaholdingacontacta(seal-
in)aonaaaNEMAastarteraisaindicatedabyatheaterminalamarking:a-aans✔✔A1a&aA2
Theaneutralabusainaaasubapanel:a-aans✔✔isabonded
TheaPEAKavoltageainaaanominala120/208aVACasystemais:a-aans✔✔208V.
THWNaconductorsahaveaanaouterajacketamadeaof:a-aans✔✔nylon
, Whataisashownaonaaasectionaladrawing?a-aans✔✔Cutawayaviewaofaaabuilding
Whoaisaallowedatoaremoveaanotheraelectrician'satagaoralockafromaanyavalve,aswitch,aorapie
ceaofaequipmentawithoutaproperaauthorization?a-aans✔✔noaone.
TheaMAINapurposeaofaaarevisionablockaonaanaelectricaladrawingaisato:a-
aans✔✔noteaanyachangesatoatheaoriginaladrawings
Whichaofatheafollowingaisatheaclassifiedalocationawhereacombustibleavaporsaareaalwaysapr
esent?a-aans✔✔classaIaDivaI
Withaaarowaofa3-4"aconduitsaandasecondarowaofa3-2"aanda2-
1"aconduitsaforaanaangleapullaboxawhataisatheaMINIMUMadistanceabetweenatheaoppositeaw
allsaofatheapullabox?a-aans✔✔32"
Exposedafield-routedaelectricalaconduitaSHOULDabeainstalledasoathatait:a-
aans✔✔isaplumbaandalevel
Whenawiringacontrolapushabuttonacontrolacircuit,atheaauxiliaryaholdingacontacta(seal-
in)aisawiredawithatheastartabuttonain:a-aans✔✔parallel
Ferrousametalaraceways,aboxes,afittings,aandasupportsamustabeaprotectedaagainst:a-
aans✔✔corrosion
Whichaofatheafollowingafactorsaisausedatoacontrolatheaspeedaofaanainductionamotor?a-
aans✔✔Frequency
Electricalahandatoolsathatauseaaaregulara120-voltasystemaMUSTabea3-
wireagroundedaUNLESSathe:a-aans✔✔toolaisadouble-
insulatedaandaisaapprovedabyaanaindependentatestingafacility.
Aaconductorawitha220amilsaofainsulationawouldahaveainsulationathicknessaof:a-
aans✔✔0.22"
Whataisatheapurposeaofasealingacableaendsathataareainastorage?a-
aans✔✔toakeepamoistureafromaenteringait
WhichaoneaofatheafusesaisaaastandardasizeaaccordingatoatheaNEC?a-aans✔✔3
Aa1000aKVAathreeaphaseatransformerahasaaasecondaryavoltageaofa208/120.aWhataisatheas
econdaryafullaloadaamperage?a-aans✔✔
Aamegohmmeterawillabeausedatoacheckaaacable.aTheaelectricianaMUSTabeasureathatatheaci
rcuitaisa-aans✔✔de-energizedaandalocked,ataggedaout,aandatested.
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