ELECTRICAL NCCER TEST QUESTIONS
WITH CORRECT ANSWERS 2026
In a guardrail system, the guardrails can be made of any of the following EXCEPT: -
CORRECT ANSWER -ropebanding
If the potential across the circuit is 48 volts and the current is 5 amps the resistance of th
e circuit is: - CORRECT ANSWER -9.6 ohms
A UL listed rod type grounding electrode must have a minimum length of: -
CORRECT ANSWER -8'
What is the MINIMUM number of overload sensing units required for all three phase moto
rs? - CORRECT ANSWER -3
In a circuit of pure capacitance, the current leads the voltage by an angle of: -
CORRECT ANSWER -90-degrees
The standard unit for a measuring the cross-sectional area of a wire is the: -
CORRECT ANSWER -circular mil
The drawing scale is MOST likely to be found in which of the following drawing locations? -
CORRECT ANSWER -the drawing little block
The length of a bare copper conductor in a ground ring MUST be buried no less than 2.5'
below grade and with a length of at least: - CORRECT ANSWER -20 ft.
When installing heating cables for anti-icing systems, cable patters should be in a: -
CORRECT ANSWER -Serpentine
, An auxiliary holding contact (seal-
in) on a NEMA starter is indicated by the terminal marking: - CORRECT ANSWER -A1 & A2
The neutral bus in a sub panel: - CORRECT ANSWER -is bonded
The PEAK voltage in a nominal 120/208 VAC system is: - CORRECT ANSWER -208V.
THWN conductors have an outer jacket made of: - CORRECT ANSWER -nylon
What is shown on a sectional drawing? - CORRECT ANSWER -Cutaway view of a building
Who is allowed to remove another electrician's tag or lock from any valve, switch, or piece
of equipment without proper authorization? - CORRECT ANSWER -no one.
The MAIN purpose of a revision block on an electrical drawing is to: - CORRECT ANSWER -
note any changes to the original drawings
Which of the following is the classified location where combustible vapors are always prese
nt? - CORRECT ANSWER -class I Div I
With a row of 3-4" conduits and second row of 3-2" and 2-
1" conduits for an angle pull box what is the MINIMUM distance between the opposite wal
ls of the pull box? - CORRECT ANSWER -32"
Exposed field-routed electrical conduit SHOULD be installed so that it: -
CORRECT ANSWER -is plumb and level
WITH CORRECT ANSWERS 2026
In a guardrail system, the guardrails can be made of any of the following EXCEPT: -
CORRECT ANSWER -ropebanding
If the potential across the circuit is 48 volts and the current is 5 amps the resistance of th
e circuit is: - CORRECT ANSWER -9.6 ohms
A UL listed rod type grounding electrode must have a minimum length of: -
CORRECT ANSWER -8'
What is the MINIMUM number of overload sensing units required for all three phase moto
rs? - CORRECT ANSWER -3
In a circuit of pure capacitance, the current leads the voltage by an angle of: -
CORRECT ANSWER -90-degrees
The standard unit for a measuring the cross-sectional area of a wire is the: -
CORRECT ANSWER -circular mil
The drawing scale is MOST likely to be found in which of the following drawing locations? -
CORRECT ANSWER -the drawing little block
The length of a bare copper conductor in a ground ring MUST be buried no less than 2.5'
below grade and with a length of at least: - CORRECT ANSWER -20 ft.
When installing heating cables for anti-icing systems, cable patters should be in a: -
CORRECT ANSWER -Serpentine
, An auxiliary holding contact (seal-
in) on a NEMA starter is indicated by the terminal marking: - CORRECT ANSWER -A1 & A2
The neutral bus in a sub panel: - CORRECT ANSWER -is bonded
The PEAK voltage in a nominal 120/208 VAC system is: - CORRECT ANSWER -208V.
THWN conductors have an outer jacket made of: - CORRECT ANSWER -nylon
What is shown on a sectional drawing? - CORRECT ANSWER -Cutaway view of a building
Who is allowed to remove another electrician's tag or lock from any valve, switch, or piece
of equipment without proper authorization? - CORRECT ANSWER -no one.
The MAIN purpose of a revision block on an electrical drawing is to: - CORRECT ANSWER -
note any changes to the original drawings
Which of the following is the classified location where combustible vapors are always prese
nt? - CORRECT ANSWER -class I Div I
With a row of 3-4" conduits and second row of 3-2" and 2-
1" conduits for an angle pull box what is the MINIMUM distance between the opposite wal
ls of the pull box? - CORRECT ANSWER -32"
Exposed field-routed electrical conduit SHOULD be installed so that it: -
CORRECT ANSWER -is plumb and level
