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Exam (elaborations)

NCCER ELECTRICAL LEVEL 2 GROUNDING AND BONDING QUESTIONS AND ANSWERS 2025

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NCCER ELECTRICAL LEVEL 2 GROUNDING AND BONDING QUESTIONS AND ANSWERS 2025

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NCCER Electrical Level 2
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NCCER Electrical Level 2








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Institution
NCCER Electrical Level 2
Course
NCCER Electrical Level 2

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Uploaded on
April 12, 2025
Number of pages
3
Written in
2024/2025
Type
Exam (elaborations)
Contains
Questions & answers

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  • nccer electrical level 2 grounding and bonding que

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NCCER ELECTRICAL LEVEL 2
GROUNDING AND BONDING
QUESTIONS AND ANSWERS 2025
NECAArticleA250A-ACORRECTAANSWERS-
IsAtheAprimaryAgoverningAarticleAforAtheAproperAuseAandAinstallationAofAgroundingAandA
bonding
shortAcircuitA-ACORRECTAANSWERS-
aAconductingAconnection,AwhetherAintentionalAorAaccidental,AbetweenAanyAofAtheAconduct
orsAofAanAelectricalAsystem,AwhetherAitAisAfromAline-to-lineAorAfromAline-to-neutral
GroundAfaultA-ACORRECTAANSWERS-
asAdefinedAinANECAArticleA100,AisAanAunintentional,AelectricallyAconductingAconnectionAbet
weenAanAungroundedAconductorAofAanAelectricalAcircuitAandAtheAnormallyAnoncurrent-
carryingAconductors
equipmentAgroundingAconductorA-ACORRECTAANSWERS-
theAconductiveApathAusedAtoAconnectAtheAnoncurrent-
carryingAmetalApartsAofAequipment,Araceways,AandAotherAenclosuresAtoAtheAsystemAgroun
dedAconductor,AtheAgroundingAelectrodeAconductor,AorAboth.
GroundingAsystemsAlessAthanA50vA-ACORRECTAANSWERS-
groundingAisArequiredAinAtheAfollowingAsituationAwhereAsuppliedAbyAtransformersAifAtheAsup
plyAvoltageAtoAtheAtransformerAexceedsA150vAtoAground
GroundingAACAsystemsAoverA1kVA-ACORRECTAANSWERS-
mustAbeAgroundedAifAtheyAsupplyAmobileAorAportableAequipmentAasAcoveredAinANECASecti
onA250.188
5AA(A50-45=5)A-ACORRECTAANSWERS-
aAsingleAphaseAsystemAhasAtwoAlegs,ALegAAAandALegAB.ALegAAAisAcarryingA50AAandAlegABAi
sAcarryingA45A,AtheAcurrentAcarriedAbyAtheAneutralAisAwhat
-Lightning,A
-voltageAsurgesAhigherAthanAthatAforAwhichAtheAcircuitAisAdesignedA-
ACORRECTAANSWERS-

aAgroundedAsystemAmustAlimitAtheAvoltageAonAtheAelectricalAsystemAandAprotectAitAfrom
GroundingAelectrodeAsystemA-ACORRECTAANSWERS-
InAgeneral,AallAtheAfollowingAelectrodesAthatAareApresentAmustAbeAbondedAtogetherAtoAform
steelAorAironAmustAbeAatAleastA1/4"Athick
copperAneedAonlyAbeA0.06"A(1.5mm)AthickA-ACORRECTAANSWERS-
howAthickAmustAplatesAofAironAorAsteel
howAthickAmustAnonferrousAmetalAlikeAcopperAbe
20AohmsAorAlessA-ACORRECTAANSWERS-
Rod,Apipe,AandAplateAelectrodesAmustAhaveAaAresistanceAtoAgroundAof__.AIfAnot,AtheyAmust
AbeAaugmentedAbyAanAadditionalAelectrodeAspacedAnotAlessAthanA6'AfromAtheAfirst

atAlestA6'AapartA-ACORRECTAANSWERS-groundingAelectrodesAmustAbeAspaced
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