Electrical NCCER test
Electrical NCCER test
In a guardrail system, the guardrails can be made of any of the following EXCEPT: - ANSWER
ropebanding
If the potential across the circuit is 48 volts and the current is 5 amps the resistance of the circuit is: -
ANSWER 9.6 ohms
A UL listed rod type grounding electrode must have a minimum length of: - ANSWER 8'
What is the MINIMUM number of overload sensing units required for all three phase motors? - ANSWER
3
In a circuit of pure capacitance, the current leads the voltage by an angle of: - ANSWER 90-degrees
The standard unit for a measuring the cross-sectional area of a wire is the: - ANSWER circular mil
The drawing scale is MOST likely to be found in which of the following drawing locations? - 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: - ANSWER 20 ft.
When installing heating cables for anti-icing systems, cable patters should be in a: - ANSWER Serpentine
An auxiliary holding contact (seal-in) on a NEMA starter is indicated by the terminal marking: - ANSWER
A1 & A2
The neutral bus in a sub panel: - ANSWER is bonded
, Electrical NCCER test
The PEAK voltage in a nominal 120/208 VAC system is: - ANSWER 208V.
THWN conductors have an outer jacket made of: - ANSWER nylon
What is shown on a sectional drawing? - 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? - ANSWER no one.
The MAIN purpose of a revision block on an electrical drawing is to: - ANSWER note any changes to the
original drawings
Which of the following is the classified location where combustible vapors are always present? -
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? - ANSWER 32"
Exposed field-routed electrical conduit SHOULD be installed so that it: - ANSWER is plumb and level
When wiring control push button control circuit, the auxiliary holding contact (seal-in) is wired with the
start button in: - ANSWER parallel
Ferrous metal raceways, boxes, fittings, and supports must be protected against: - ANSWER corrosion
Which of the following factors is used to control the speed of an induction motor? - ANSWER Frequency
Electrical hand tools that use a regular 120-volt system MUST be 3-wire grounded UNLESS the: -
ANSWER tool is double-insulated and is approved by an independent testing facility.
A conductor with 220 mils of insulation would have insulation thickness of: - ANSWER 0.22"
Electrical NCCER test
In a guardrail system, the guardrails can be made of any of the following EXCEPT: - ANSWER
ropebanding
If the potential across the circuit is 48 volts and the current is 5 amps the resistance of the circuit is: -
ANSWER 9.6 ohms
A UL listed rod type grounding electrode must have a minimum length of: - ANSWER 8'
What is the MINIMUM number of overload sensing units required for all three phase motors? - ANSWER
3
In a circuit of pure capacitance, the current leads the voltage by an angle of: - ANSWER 90-degrees
The standard unit for a measuring the cross-sectional area of a wire is the: - ANSWER circular mil
The drawing scale is MOST likely to be found in which of the following drawing locations? - 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: - ANSWER 20 ft.
When installing heating cables for anti-icing systems, cable patters should be in a: - ANSWER Serpentine
An auxiliary holding contact (seal-in) on a NEMA starter is indicated by the terminal marking: - ANSWER
A1 & A2
The neutral bus in a sub panel: - ANSWER is bonded
, Electrical NCCER test
The PEAK voltage in a nominal 120/208 VAC system is: - ANSWER 208V.
THWN conductors have an outer jacket made of: - ANSWER nylon
What is shown on a sectional drawing? - 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? - ANSWER no one.
The MAIN purpose of a revision block on an electrical drawing is to: - ANSWER note any changes to the
original drawings
Which of the following is the classified location where combustible vapors are always present? -
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? - ANSWER 32"
Exposed field-routed electrical conduit SHOULD be installed so that it: - ANSWER is plumb and level
When wiring control push button control circuit, the auxiliary holding contact (seal-in) is wired with the
start button in: - ANSWER parallel
Ferrous metal raceways, boxes, fittings, and supports must be protected against: - ANSWER corrosion
Which of the following factors is used to control the speed of an induction motor? - ANSWER Frequency
Electrical hand tools that use a regular 120-volt system MUST be 3-wire grounded UNLESS the: -
ANSWER tool is double-insulated and is approved by an independent testing facility.
A conductor with 220 mils of insulation would have insulation thickness of: - ANSWER 0.22"
