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Electrician NCCER Questions and Answers | Latest Update
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Which article of the NEC covers grounding? Article 250 What is a dropout plate? Metal plate with a curve surface for cable to follow as it passes from the tray All of the following are common service voltages in the United States Except: 372/575 3-Phase, 4-wire What does a GFCI breaker d...

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  • September 26, 2024
  • 63
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • electrician nccer questions and answers latest
  • which article of the nec covers grounding artic

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2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!

Electrician NCCER Questions and
Answers | Latest Update
Which article of the NEC covers grounding?


✓ Article 250




What is a dropout plate?


✓ Metal plate with a curve surface for cable to follow as it passes from the

tray




All of the following are common service voltages in the United States Except:


✓ 372/575 3-Phase, 4-wire




What does a GFCI breaker do?


✓ Opens a circuit to prevent operation of an electrical device




What will happen when one or more coils in a winding are grounded?


✓ The motor will automatically blow fuses




1 | P a g e | G r a d e A + | 2 0 0 2 5

,2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!
eight incandescent lighting fixtures are to be installed. Each fixture is 120 volts, with a 200-

whatt lamp what is the total connected load?


✓ 13.3 Amps




The __________must be grounded in a bussed glutter if use as the main service

equipmemt


✓ Neutral busbar




When wall mounting cable tray, ensure that


✓ The building structure is strong enough to support the tray system




The purpose of sealing cable ends when reels of cable are in storage is ______________


✓ to keep moisture from creeping in




The outer covering on liquid-tight flexible metal conduit is use for


✓ A moisture seal




A good electrical connection should


✓ Be mechanically and electrically secure


1 | P a g e | G r a d e A + | 2 0 0 2 5

,2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!


The symbol normally use for duplex


✓ Circle with two parallel lines draw through it




Disconnecting means are covered in


✓ NEC section 110-22




In relation to switches, the term throw refers to the


✓ Number of internal operations that switch can perform




A 3-phase, 4-wire, 480v service requires ________ current transformers


✓ 3




Services conductors and equipment are covered in


✓ NEC Article 230




The NEC required that all receptacles installed on 25 amp and 20 amp branch circuits

be__________ receptacles


✓ Grounding

1 | P a g e | G r a d e A + | 2 0 0 2 5

, 2024/ 2025 | © copyright | This work may not be copied for profit gain Excel!


The circular mil is based on the


✓ Cross-sectional area of the wire




A transformer with the primary of 400 turns and a secondary of 300 turns has a


✓ Step down turns ratio of 4:3




Of the termination classes listed below,_____ is the only one that provides a seal against

external elements


✓ Class 1




Unless otherwise noted, the calculations in AC circuits ______ values


✓ Rms




When the coil turns increased the ________


✓ Induced voltage is increased




As the temperature surrounding a self regulating heating cable rises, the ________


✓ Resistance of the polymeric core increases

1 | P a g e | G r a d e A + | 2 0 0 2 5

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