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
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
