Electrical NCCER Test. Latest edition
2026-2027. Questions & Correct
Answers. Graded A
A 1000 KVA three phase transformer has a secondary voltage of 208/120.
What is the secondary full load amperage? - ANS
A 1500 KVA three-phase transformer has a secondary voltage of 480/277.
What is the secondary full load amperage - ANS
A conductor with 220 mils of insulation would have insulation thickness of: -
ANS0.22"
A current transformer has a rating of 4000:5. If 2000 amps load is on the
primary, the secondary output would produce: - ANS2.5 amps
A lightning outlet symbol in the shape of a circle indicated a: -
ANSincandescent fixture
A material with poor electrical conducting properties is a good -
ANSinsulator
1
, A megohmmeter will be used to check a cable. The electrician MUST be
sure that the circuit is - ANSde-energized and locked, tagged out, and
tested.
A protective device for limiting voltage spikes by discharging or bypassing
surge current is called a: - ANSsurge limiter
A UL listed rod type grounding electrode must have a minimum length of: -
ANS8'
A voltage source of a circuit provides 240 volts and draws 48 amps. How
much resistance is in the circuit? - ANS5 ohms
ALL multimeters are capable of measuring: - ANScurrent, voltage, and
resistance
All of the following are common service voltages in the United States
Except: - ANS372/575 three-phase, four-wire
An auxiliary holding contact (seal-in) on a NEMA starter is indicated by the
terminal marking: - ANSA1 & A2
An electrician that attempts to install or remove energized fuses will be
exposed to the risk of an electrical shock and an electrical: - ANSarc.
An insulator resistance tester is also known as a: - ANSmegohmeter
2
2026-2027. Questions & Correct
Answers. Graded A
A 1000 KVA three phase transformer has a secondary voltage of 208/120.
What is the secondary full load amperage? - ANS
A 1500 KVA three-phase transformer has a secondary voltage of 480/277.
What is the secondary full load amperage - ANS
A conductor with 220 mils of insulation would have insulation thickness of: -
ANS0.22"
A current transformer has a rating of 4000:5. If 2000 amps load is on the
primary, the secondary output would produce: - ANS2.5 amps
A lightning outlet symbol in the shape of a circle indicated a: -
ANSincandescent fixture
A material with poor electrical conducting properties is a good -
ANSinsulator
1
, A megohmmeter will be used to check a cable. The electrician MUST be
sure that the circuit is - ANSde-energized and locked, tagged out, and
tested.
A protective device for limiting voltage spikes by discharging or bypassing
surge current is called a: - ANSsurge limiter
A UL listed rod type grounding electrode must have a minimum length of: -
ANS8'
A voltage source of a circuit provides 240 volts and draws 48 amps. How
much resistance is in the circuit? - ANS5 ohms
ALL multimeters are capable of measuring: - ANScurrent, voltage, and
resistance
All of the following are common service voltages in the United States
Except: - ANS372/575 three-phase, four-wire
An auxiliary holding contact (seal-in) on a NEMA starter is indicated by the
terminal marking: - ANSA1 & A2
An electrician that attempts to install or remove energized fuses will be
exposed to the risk of an electrical shock and an electrical: - ANSarc.
An insulator resistance tester is also known as a: - ANSmegohmeter
2
