Electrical NCCER test 89 questions with
verified solutions
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 the
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
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
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
motors? - 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
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
present? - 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 walls of the pull box? - correct answer
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
✔32"
|||
Exposed field-routed electrical conduit SHOULD be installed so that it: - correct answer ✔is
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
plumb and level ||| |||
verified solutions
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 the
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
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
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
motors? - 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
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
present? - 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 walls of the pull box? - correct answer
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
✔32"
|||
Exposed field-routed electrical conduit SHOULD be installed so that it: - correct answer ✔is
||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||
plumb and level ||| |||
