NCCER ELECTRICAL TEST QUESTIONS WITH
VERIFIED ANSWERS
The NEC recommends maintaining voltage within a 3% drop. If a branch circuit operates
at 240 volts AC. What is the minimum circuit operating volt?
232
What is the name of the connecting device shown in the diagram?
Split-bolt
The volt amperes in an AC circuit is the same as
Apparent power
What is the voltage drop for a #8 (16.510 cmil) copper wire at 120v. 215 feet one way and a
load of 39amps?
10.5
If a voltage source of a circuit provides 240 volts and there are 5 ohms of resistance, how
much current is in the circuit?
48 amps
What should be done to change rotation of a 3 phase motor?
Swap any 2 T leads
What instrument is used to measure current?
Ammeter
Which plan indicates the location of structures and equipment on a property?
Site
Generally , the most ideal conductor is made of:
Copper
What is the standard size system used in the united states?
AWG
What is insulating tape?
Non-Conductive adhesive tape
Which of these is used as a guide to assist cables entering a conduit?
Piston
, Which of the following is not a reason why electrical systems must be grounded?
Limit the potential between ungrounded conductors
What type of conduit body is characterized by a threaded straight hub on each end?
C
A megger will be used to check an in-service cable. The Electrician MUST be sure that the
circuit is:
De-energized and locked tagged out, and tested
Rubber gloves MUST be electrically tested at MAXIMUM intervals of:
6 months
A dangerously high voltage is produced when someone opens the secondary circuit of a:
Current transformer
Which choice best describes the two types of pushbutton operators typically used in motor
controls
Open and closed
In the event of an emergency where the lockout/ tagout device is left secured, who can
remove the lockout/tagout device?
Authorized supervisor
A drawing showing a point A to point B hookup of conductors is called a:
Wiring diagram
A NEMA type___ enclosure is both watertight and corrosion- resistant.
4X
What's the MAIN characteristic of a confined space?
Limited access and egress
Which of the following BEST describes where the type and size of overcurrent protection is
found?
Panelboard schedule
A Type "X" conduit body has how many conduit entries
4
What test equipment can be used to test the condition of insulation in electrical apparatus?
Megohmmeter
VERIFIED ANSWERS
The NEC recommends maintaining voltage within a 3% drop. If a branch circuit operates
at 240 volts AC. What is the minimum circuit operating volt?
232
What is the name of the connecting device shown in the diagram?
Split-bolt
The volt amperes in an AC circuit is the same as
Apparent power
What is the voltage drop for a #8 (16.510 cmil) copper wire at 120v. 215 feet one way and a
load of 39amps?
10.5
If a voltage source of a circuit provides 240 volts and there are 5 ohms of resistance, how
much current is in the circuit?
48 amps
What should be done to change rotation of a 3 phase motor?
Swap any 2 T leads
What instrument is used to measure current?
Ammeter
Which plan indicates the location of structures and equipment on a property?
Site
Generally , the most ideal conductor is made of:
Copper
What is the standard size system used in the united states?
AWG
What is insulating tape?
Non-Conductive adhesive tape
Which of these is used as a guide to assist cables entering a conduit?
Piston
, Which of the following is not a reason why electrical systems must be grounded?
Limit the potential between ungrounded conductors
What type of conduit body is characterized by a threaded straight hub on each end?
C
A megger will be used to check an in-service cable. The Electrician MUST be sure that the
circuit is:
De-energized and locked tagged out, and tested
Rubber gloves MUST be electrically tested at MAXIMUM intervals of:
6 months
A dangerously high voltage is produced when someone opens the secondary circuit of a:
Current transformer
Which choice best describes the two types of pushbutton operators typically used in motor
controls
Open and closed
In the event of an emergency where the lockout/ tagout device is left secured, who can
remove the lockout/tagout device?
Authorized supervisor
A drawing showing a point A to point B hookup of conductors is called a:
Wiring diagram
A NEMA type___ enclosure is both watertight and corrosion- resistant.
4X
What's the MAIN characteristic of a confined space?
Limited access and egress
Which of the following BEST describes where the type and size of overcurrent protection is
found?
Panelboard schedule
A Type "X" conduit body has how many conduit entries
4
What test equipment can be used to test the condition of insulation in electrical apparatus?
Megohmmeter
