NATIONAL ELECTRIC CODE FINAL
EXAM AND PRACTICE EXAM QUESTIONS
2025 ACTUAL EXAM COMPLETE EXAM
QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+
What maximum length of free conductors should be
left at each outlet and switch point for making up
joints, or connecting fixtures or devices?
A. 4 inches
B. 6 inches
C. 3 inches
D. 10 inches - ....ANSWER...B. 6 inches
Individually covered or insulated grounding
conductors should have a continuous outer finish
that is:
A. Red
B. Green and Black
C. Black
,D. Either green or green with one or more yellow
stripes
E. White or natural gray - ....ANSWER...D. Either
green or green with one or more yellow stripes
The secondary winding of a single-phase
transformer has a full load current of 30 amperes.
The power leads are single conductor, type TW rated
at 60 centigrade. What would be the minimum size
conductors used on the secondary?
A. No. 10 AWG
B. No. 12 AWG
C. No. 14 AWG
D. No. 8 AWG - ....ANSWER...A. No. 10 AWG
In most cases, the minimum-sized (solid or
stranded) conductor allowed when wiring a control
panel is:
A. No. 16 wire
B. No. 18 wire
C. No. 12 wire
D. No. 14 wire - ....ANSWER...D. No. 14 wire
,What color insulation is associated with frame
grounding conductor?
A. Green
B. Black
C. White
D. Orange - ....ANSWER...A. Green
Conductors that supply one or more resistance
welders must be protected by an overcurrent device
rated or set at not more than:
A. 300% of the conductor rating
B. 100% of the conductor rating
C. 125% of the conductor rating
D. 200% of that conductor rating - ....ANSWER...A.
300% of the conductor rating
What color insulation is associated with the
grounded, current-carrying conductor?
A. White
B. Green
C. Black
D. Orangr - ....ANSWER...A. White
, When reference is made to conductors in the NEX,
what type of material is assumed?
A. Copper
B. Iron
C. Aluminum
D. Tungsten - ....ANSWER...A. Copper
An electrician knowing a conductors "AWG" can
determine the:
A. Allowable current carrying capacity
B. Voltage rating
C. Interrupting capacity
D. Application and insulation rating - ....ANSWER...A.
Allowable current carrying capacity
"THW" marked on a conductor refers to that
conductor's:
A. Allowable current carrying capacity
B. Maximum voltage rating
C. Allowable ampacity rating
EXAM AND PRACTICE EXAM QUESTIONS
2025 ACTUAL EXAM COMPLETE EXAM
QUESTIONS WITH DETAILED VERIFIED
ANSWERS (100% CORRECT ANSWERS)
/ALREADY GRADED A+
What maximum length of free conductors should be
left at each outlet and switch point for making up
joints, or connecting fixtures or devices?
A. 4 inches
B. 6 inches
C. 3 inches
D. 10 inches - ....ANSWER...B. 6 inches
Individually covered or insulated grounding
conductors should have a continuous outer finish
that is:
A. Red
B. Green and Black
C. Black
,D. Either green or green with one or more yellow
stripes
E. White or natural gray - ....ANSWER...D. Either
green or green with one or more yellow stripes
The secondary winding of a single-phase
transformer has a full load current of 30 amperes.
The power leads are single conductor, type TW rated
at 60 centigrade. What would be the minimum size
conductors used on the secondary?
A. No. 10 AWG
B. No. 12 AWG
C. No. 14 AWG
D. No. 8 AWG - ....ANSWER...A. No. 10 AWG
In most cases, the minimum-sized (solid or
stranded) conductor allowed when wiring a control
panel is:
A. No. 16 wire
B. No. 18 wire
C. No. 12 wire
D. No. 14 wire - ....ANSWER...D. No. 14 wire
,What color insulation is associated with frame
grounding conductor?
A. Green
B. Black
C. White
D. Orange - ....ANSWER...A. Green
Conductors that supply one or more resistance
welders must be protected by an overcurrent device
rated or set at not more than:
A. 300% of the conductor rating
B. 100% of the conductor rating
C. 125% of the conductor rating
D. 200% of that conductor rating - ....ANSWER...A.
300% of the conductor rating
What color insulation is associated with the
grounded, current-carrying conductor?
A. White
B. Green
C. Black
D. Orangr - ....ANSWER...A. White
, When reference is made to conductors in the NEX,
what type of material is assumed?
A. Copper
B. Iron
C. Aluminum
D. Tungsten - ....ANSWER...A. Copper
An electrician knowing a conductors "AWG" can
determine the:
A. Allowable current carrying capacity
B. Voltage rating
C. Interrupting capacity
D. Application and insulation rating - ....ANSWER...A.
Allowable current carrying capacity
"THW" marked on a conductor refers to that
conductor's:
A. Allowable current carrying capacity
B. Maximum voltage rating
C. Allowable ampacity rating
