NEC Challenge Exam 3 Questions With
Correct Answers
1. |Barriers |shall |be |placed |in |all |service |panelboards, |switchboards, |and |switchgear |such |that |
no |uninsulated, |ungrounded |service |_____ |or |service |terminal |is |exposed |to |inadvertent |
contact |by |persons |or |maintenance |equipment |while |servicing |load |terminations. |- |CORRECT |
ANSWER✔✔-408.3(A)(2) |busbar
2. |Where |equipment |grounding |is |required |for |an |installation |of |HDPE, |a |separate |equipment |
grounding |conductor |shall |be |_____. |- |CORRECT |ANSWER✔✔-353.6 |installed |within |the |
conduit
3. |Floor-mounted |flat |conductor |cable |and |fittings |shall |be |covered |with |carpet |squares |no |
larger |than |______. |- |CORRECT |ANSWER✔✔-324.41 |39.37 |in. |square
4. |Cable |bus |framework |that |is |_____ |shall |be |permitted |was |the |equipment |grounding |
conductor |for |branch |circuits |and |feeders. |- |CORRECT |ANSWER✔✔-370.60(1) |bonded
5. |The |metallic |sheath |of |metal-clad |cable |shall |be |continuous |and |________. |- |CORRECT |
ANSWER✔✔-330.116 |close |fitting
6. |The |voltage |drop |on |technical |power |systems |for |sensitive |electronic |equipment |shall |not |
exceed |_______ |percent |for |branch |circuits. |- |CORRECT |ANSWER✔✔-647.4(D) |1.5
7. |A |recessed |luminaire |not |identified |for |contact |with |insulation |shall |have |all |recessed |parts |
spaced |not |less |than |_____ |in. |from |combustible |materials, |except |for |points |of |support. |- |
CORRECT |ANSWER✔✔-410.166(A)(1) |1/2
, 8. |Receptacles |or |their |cover |plates, |supplied |from |the |life |safety |or |equipment |branches |in |
nursing |homes |shall |have |a |distinctive |color |or |marking |so |as |to |be |readily |identifiable. |- |
CORRECT |ANSWER✔✔-517.42(E) |TRUE
9. |a |nonmetallic |surface |raceway |is |a |nonmetallic |raceway |that |is |intended |to |be |mounted |to |
the |surface |of |a |structure, |with |associated |couplings, |connectors, |boxes, |and |fittings |for |the |
installation |of |electrical |conductors. |- |CORRECT |ANSWER✔✔-388.2 |Surface |Nonmetallic |
Raceway |TRUE
10. |An |insulated |grounded |conductor |_____ |AWG |or |smaller |shall |be |identified |by |a |
continuous |white |or |gray |outer |finish, |or |by |three |continuous |white |or |gray |outer |finish, |or |by |
three |continuous |white |or |gray |stripes |along |its |entire |length |on |other |than |green |insulation. |-
|CORRECT |ANSWER✔✔-200.6(A)(1), |(2), |and |(3) |6
11. |Where |single-conductor |Type |MI |cables |are |used |, |all |phase |conductors |and, |when |used, |
the |______ |conductor, |shall |be |grouped |together |to |minimize |induced |voltage |on |the |sheath. |-
|CORRECT |ANSWER✔✔-332.31 |neutral
12. |Where |ventilation |marking |is |not |required, |the |electric |vehicle |supply |equipment |shall |be |
clearly |field |marked, |that |"ventilation |is |not |required." |- |CORRECT |ANSWER✔✔-625.15(B) |
FALSE
13. |The |connection |between |the |grounded |circuit |conductor |and |the |supply-side |bonding |
jumper |or |equipment |grounding |conductor, |or |both, |at |a |_____ |is |called |a |"system |bonding |
jumper." |- |CORRECT |ANSWER✔✔-100 |Bonding |Jumper, |System |separately |derived |system
14. |Article |647 |covers |the |installation |and |wiring |of |separately |derived |systems |that |operate |at
|_____ |volts-to-ground |and |______ |volts |line-to-line |for |sensitive |electronic |equipment. |- |
CORRECT |ANSWER✔✔-647.1 |60, |120
Correct Answers
1. |Barriers |shall |be |placed |in |all |service |panelboards, |switchboards, |and |switchgear |such |that |
no |uninsulated, |ungrounded |service |_____ |or |service |terminal |is |exposed |to |inadvertent |
contact |by |persons |or |maintenance |equipment |while |servicing |load |terminations. |- |CORRECT |
ANSWER✔✔-408.3(A)(2) |busbar
2. |Where |equipment |grounding |is |required |for |an |installation |of |HDPE, |a |separate |equipment |
grounding |conductor |shall |be |_____. |- |CORRECT |ANSWER✔✔-353.6 |installed |within |the |
conduit
3. |Floor-mounted |flat |conductor |cable |and |fittings |shall |be |covered |with |carpet |squares |no |
larger |than |______. |- |CORRECT |ANSWER✔✔-324.41 |39.37 |in. |square
4. |Cable |bus |framework |that |is |_____ |shall |be |permitted |was |the |equipment |grounding |
conductor |for |branch |circuits |and |feeders. |- |CORRECT |ANSWER✔✔-370.60(1) |bonded
5. |The |metallic |sheath |of |metal-clad |cable |shall |be |continuous |and |________. |- |CORRECT |
ANSWER✔✔-330.116 |close |fitting
6. |The |voltage |drop |on |technical |power |systems |for |sensitive |electronic |equipment |shall |not |
exceed |_______ |percent |for |branch |circuits. |- |CORRECT |ANSWER✔✔-647.4(D) |1.5
7. |A |recessed |luminaire |not |identified |for |contact |with |insulation |shall |have |all |recessed |parts |
spaced |not |less |than |_____ |in. |from |combustible |materials, |except |for |points |of |support. |- |
CORRECT |ANSWER✔✔-410.166(A)(1) |1/2
, 8. |Receptacles |or |their |cover |plates, |supplied |from |the |life |safety |or |equipment |branches |in |
nursing |homes |shall |have |a |distinctive |color |or |marking |so |as |to |be |readily |identifiable. |- |
CORRECT |ANSWER✔✔-517.42(E) |TRUE
9. |a |nonmetallic |surface |raceway |is |a |nonmetallic |raceway |that |is |intended |to |be |mounted |to |
the |surface |of |a |structure, |with |associated |couplings, |connectors, |boxes, |and |fittings |for |the |
installation |of |electrical |conductors. |- |CORRECT |ANSWER✔✔-388.2 |Surface |Nonmetallic |
Raceway |TRUE
10. |An |insulated |grounded |conductor |_____ |AWG |or |smaller |shall |be |identified |by |a |
continuous |white |or |gray |outer |finish, |or |by |three |continuous |white |or |gray |outer |finish, |or |by |
three |continuous |white |or |gray |stripes |along |its |entire |length |on |other |than |green |insulation. |-
|CORRECT |ANSWER✔✔-200.6(A)(1), |(2), |and |(3) |6
11. |Where |single-conductor |Type |MI |cables |are |used |, |all |phase |conductors |and, |when |used, |
the |______ |conductor, |shall |be |grouped |together |to |minimize |induced |voltage |on |the |sheath. |-
|CORRECT |ANSWER✔✔-332.31 |neutral
12. |Where |ventilation |marking |is |not |required, |the |electric |vehicle |supply |equipment |shall |be |
clearly |field |marked, |that |"ventilation |is |not |required." |- |CORRECT |ANSWER✔✔-625.15(B) |
FALSE
13. |The |connection |between |the |grounded |circuit |conductor |and |the |supply-side |bonding |
jumper |or |equipment |grounding |conductor, |or |both, |at |a |_____ |is |called |a |"system |bonding |
jumper." |- |CORRECT |ANSWER✔✔-100 |Bonding |Jumper, |System |separately |derived |system
14. |Article |647 |covers |the |installation |and |wiring |of |separately |derived |systems |that |operate |at
|_____ |volts-to-ground |and |______ |volts |line-to-line |for |sensitive |electronic |equipment. |- |
CORRECT |ANSWER✔✔-647.1 |60, |120
