NETA LEVEL II EXAM STUDY GUIDE 2025/2026 QUESTIONS
WITH SOLUTIONS GRADED A+
✔✔Emergency Systems
What is the minimum acceptable temperature corrected insulation resistance value for a
480V emergency generator with random-wound stator coils manufactured in 1995? -
✔✔Correct Answer: 5 Megohms
Help: NETA MTS-2023 Section 7.22.1.D.2.3
✔✔Fundamentals and Theory
Which of the following would not be a characteristic of an ideal three-phase power
system? - ✔✔Correct Answer: The phase currents and neutral current are all equal
Help: Power Quality Analysis: Basic Theory and Applications Explained
✔✔Instrument Transformers
A bus with 24kA available fault current is to be equipped with 400/5A current
transformers connected to a protective relay with a total secondary burden of 0.33
ohms. What class CT should be chosen to ensure that these CT's do not saturate under
maximum fault conditions? - ✔✔Correct Answer: C200
Help: Choosing Current Transformers for Relaying Use (01-4TB-062)
✔✔Safety
After a conductor or circuit part has been deenergized and Lockout-Tagout (LOTO)
applied and verified, which of the following is the best way to release stored energy? -
✔✔Correct Answer: Ground the conductor or circuit part
Help: Safeguarding Electrical Workers
✔✔To measure circuit resistance, first
a) zero the ohm scale.
b) check for presence of voltage.
c) start with the highest ohm scale.
d) check frequency. - ✔✔Answer: check for presence of voltage
✔✔Six 12-volt, 100 ampere-hour batteries are connected in series to form a bank of
batteries. What is the rating of the bank?
a) 12 volts, 100 ampere-hour
b) 12 volts, 600 ampere-hour
c) 72 volts, 100 ampere-hour
d) 72 volts, 600 ampere-hour - ✔✔Answer: 72 Volts, 100 Amp-hour
· Connecting batteries in series only adds up the voltage, while the ampere-hour
capacity remains the same.
Therefore, with six 12-volt batteries in series, the total voltage becomes 72 volts (6 x 12
volts).
The ampere-hour rating of the bank stays at 100 ampere-hours.
,✔✔In accordance with ANSI/NETA MTS, the recommended minimum insulation
resistance for the AC windings built before 1970 in a 4160V generator at 40°C is
a. 1 Mohms
b. 100 Mohms
c. 1000 Mohms
d) 10000 Mohms - ✔✔Answer: 100Mohms
· ANSI NETA MTS 2019 7.15.1 D
✔✔Wiring diagrams are principally utilized to show control devices
a) connections.
b) operation.
c) power flow.
d) Rating - ✔✔Answer: Connections
✔✔Which of the following are used to classify fiber optic cables?
(A) Single mode, multi mode
(B) High impedance, low impedance
(C) High reflectivity, low reflectivity
(D) Single phase, multi phase - ✔✔Answer: Single mode, Multi Mode
✔✔A network protector typically contains a
a) close-open-auto switch.
b) distance relay.
c) four pole contactor.
d) ground fault relay. - ✔✔Answer: Close-open-auto switch
✔✔Which method can be used to troubleshoot connections post-energization?
a) Insulation resistance
b) Thermographic survey
c) Harmonic evaluation
d) DLRO measurement - ✔✔Answer: Thermographic survey
· Thermographic surveys can detect damaged or loose connections in electrical
components by identifying heat from these areas. This can help identify electrical faults
and faulty installations before they stop working.
✔✔In accordance with NFPA 70E, for lockout/tagout, whether keyed or combination
locks are used, the key or the combination shall
a) never be shared with the shift supervisor or project manager.
b) remain with the individual installing the lock or the person in charge.
c) be stored in the lockout/tagout folder.
d) be shared with the project engineer. - ✔✔Answer: Remain with the individual
installing the lock or the person in charge
· NFPA 70E Chapter 1 article 120
,✔✔How many taps are typically on a de-energized tap-changer (DETC)?
a) 3
b) 4
c) 5
d) 6 - ✔✔Answer: 5
✔✔How many elements does a meter with a form 5 designation have?
a) 1
b) 2
c) 2.5
d) 3 - ✔✔Answer: 2
· Form 5 meters are commonly used for three-phase, 3-wire delta services, which only
require measurements from two phases to accurately calculate power consumption,
hence the two elements.
✔✔When untied portable ladders are used to access an upper landing surface, the top
of the ladder shall extend
a) just beneath the landing.
b) at least 1-1/2 feet above the landing.
c) at least 3 feet above the landing.
d) no more than 3 steps above the landing - ✔✔Answer: At least 3 feet above the
landing.
· OSHA 1926.1053(b)(1)
✔✔What is the maximum allowable result for a ground fault protection system
performance test per NFPA 70, National Electrical Code or Canadian Electrical Code
C22.1?
(A) 0.5 seconds at 1200 Amps
(B) 1 second at 3000 Amps
(C) Per the manufacturers instructions
(D) 2 seconds at the actual available fault current - ✔✔Answer: B) 1 Second at 3000
amps
· NFPA NEC 2020 230.95 (A)
✔✔Which of the following statements is correct as it pertains to insulation testing?
a) An Insulation Resistance test utilizes applied AC voltage
b) An AC voltage test on insulation must use a high frequency signal
c) DC testing of insulation is influenced by the volume of the insulation
d) Insulation cannot be properly evaluated using DC voltage - ✔✔Answer: c) DC testing
of insulation is influenced by the volume of the insulation.
DC testing of insulation is influenced by the volume of the insulation because the larger
the volume of insulating material, the greater the overall resistance it offers to current
flow, resulting in a higher measured insulation resistance value when tested with a DC
voltage; essentially, a larger volume provides more space for the electrical field to
distribute, minimizing the likelihood of leakage currents through the insulation material.
, ✔✔What type of protection does a CO or IAC relay typically provide?
a) overvoltage
b) undervoltage
c) overcurrent
d) over temperature - ✔✔Answer: c) overcurrent
✔✔When testing medium-voltage cables, after reaching the maximum intended voltage
level during a high potential test and completion of the intended time duration, the test
set operator should limit exceeding the specified time and voltage parameters by
a) turning the test set supply switch to off.
b) applying a ground to the equipment.
c) returning the test set voltage control to its zero position.
d) disconnecting the test set output lead. - ✔✔Answer: C) Returning the test set voltage
control to its zero position
✔✔Circuit Switchers are devices that
a) have a current interrupting rating higher than their circuit breaker counterparts.
b) are used in low voltage reversing-motor applications.
c) are protective devices that integrate overcurrent protection and circuit isolation.
d) are often used for transformer protection, where the majority of faults are limited in
magnitude - ✔✔Answer: D) Are often used for transformer protection, where most faults
are limited in magnitude
✔✔Which wire type is used by switchgear manufacturers for control wiring?
a) THHN
b) SIS
c) THW
d) RHH - ✔✔Answer: b) SIS (Solid Insulated Switchgear
✔✔Which of the following devices commonly contains a discharge resistor?
a) Hall Effect transducer
b) Rogowski coil current transformer
c) Power factor correction capacitor
d) Vacuum bottle - ✔✔Answer: c) Power factor correction capacitor
✔✔When working in a permit required confined space, a retrieval system must
a) be available on the premises.
b) include a motor operated hoist.
c) include self-contained breathing apparatus.
d) provide for non-entry rescue of the entrant - ✔✔Answer: d) Provide for a non-entry
rescue of the entrant
✔✔A contactor is not used in
WITH SOLUTIONS GRADED A+
✔✔Emergency Systems
What is the minimum acceptable temperature corrected insulation resistance value for a
480V emergency generator with random-wound stator coils manufactured in 1995? -
✔✔Correct Answer: 5 Megohms
Help: NETA MTS-2023 Section 7.22.1.D.2.3
✔✔Fundamentals and Theory
Which of the following would not be a characteristic of an ideal three-phase power
system? - ✔✔Correct Answer: The phase currents and neutral current are all equal
Help: Power Quality Analysis: Basic Theory and Applications Explained
✔✔Instrument Transformers
A bus with 24kA available fault current is to be equipped with 400/5A current
transformers connected to a protective relay with a total secondary burden of 0.33
ohms. What class CT should be chosen to ensure that these CT's do not saturate under
maximum fault conditions? - ✔✔Correct Answer: C200
Help: Choosing Current Transformers for Relaying Use (01-4TB-062)
✔✔Safety
After a conductor or circuit part has been deenergized and Lockout-Tagout (LOTO)
applied and verified, which of the following is the best way to release stored energy? -
✔✔Correct Answer: Ground the conductor or circuit part
Help: Safeguarding Electrical Workers
✔✔To measure circuit resistance, first
a) zero the ohm scale.
b) check for presence of voltage.
c) start with the highest ohm scale.
d) check frequency. - ✔✔Answer: check for presence of voltage
✔✔Six 12-volt, 100 ampere-hour batteries are connected in series to form a bank of
batteries. What is the rating of the bank?
a) 12 volts, 100 ampere-hour
b) 12 volts, 600 ampere-hour
c) 72 volts, 100 ampere-hour
d) 72 volts, 600 ampere-hour - ✔✔Answer: 72 Volts, 100 Amp-hour
· Connecting batteries in series only adds up the voltage, while the ampere-hour
capacity remains the same.
Therefore, with six 12-volt batteries in series, the total voltage becomes 72 volts (6 x 12
volts).
The ampere-hour rating of the bank stays at 100 ampere-hours.
,✔✔In accordance with ANSI/NETA MTS, the recommended minimum insulation
resistance for the AC windings built before 1970 in a 4160V generator at 40°C is
a. 1 Mohms
b. 100 Mohms
c. 1000 Mohms
d) 10000 Mohms - ✔✔Answer: 100Mohms
· ANSI NETA MTS 2019 7.15.1 D
✔✔Wiring diagrams are principally utilized to show control devices
a) connections.
b) operation.
c) power flow.
d) Rating - ✔✔Answer: Connections
✔✔Which of the following are used to classify fiber optic cables?
(A) Single mode, multi mode
(B) High impedance, low impedance
(C) High reflectivity, low reflectivity
(D) Single phase, multi phase - ✔✔Answer: Single mode, Multi Mode
✔✔A network protector typically contains a
a) close-open-auto switch.
b) distance relay.
c) four pole contactor.
d) ground fault relay. - ✔✔Answer: Close-open-auto switch
✔✔Which method can be used to troubleshoot connections post-energization?
a) Insulation resistance
b) Thermographic survey
c) Harmonic evaluation
d) DLRO measurement - ✔✔Answer: Thermographic survey
· Thermographic surveys can detect damaged or loose connections in electrical
components by identifying heat from these areas. This can help identify electrical faults
and faulty installations before they stop working.
✔✔In accordance with NFPA 70E, for lockout/tagout, whether keyed or combination
locks are used, the key or the combination shall
a) never be shared with the shift supervisor or project manager.
b) remain with the individual installing the lock or the person in charge.
c) be stored in the lockout/tagout folder.
d) be shared with the project engineer. - ✔✔Answer: Remain with the individual
installing the lock or the person in charge
· NFPA 70E Chapter 1 article 120
,✔✔How many taps are typically on a de-energized tap-changer (DETC)?
a) 3
b) 4
c) 5
d) 6 - ✔✔Answer: 5
✔✔How many elements does a meter with a form 5 designation have?
a) 1
b) 2
c) 2.5
d) 3 - ✔✔Answer: 2
· Form 5 meters are commonly used for three-phase, 3-wire delta services, which only
require measurements from two phases to accurately calculate power consumption,
hence the two elements.
✔✔When untied portable ladders are used to access an upper landing surface, the top
of the ladder shall extend
a) just beneath the landing.
b) at least 1-1/2 feet above the landing.
c) at least 3 feet above the landing.
d) no more than 3 steps above the landing - ✔✔Answer: At least 3 feet above the
landing.
· OSHA 1926.1053(b)(1)
✔✔What is the maximum allowable result for a ground fault protection system
performance test per NFPA 70, National Electrical Code or Canadian Electrical Code
C22.1?
(A) 0.5 seconds at 1200 Amps
(B) 1 second at 3000 Amps
(C) Per the manufacturers instructions
(D) 2 seconds at the actual available fault current - ✔✔Answer: B) 1 Second at 3000
amps
· NFPA NEC 2020 230.95 (A)
✔✔Which of the following statements is correct as it pertains to insulation testing?
a) An Insulation Resistance test utilizes applied AC voltage
b) An AC voltage test on insulation must use a high frequency signal
c) DC testing of insulation is influenced by the volume of the insulation
d) Insulation cannot be properly evaluated using DC voltage - ✔✔Answer: c) DC testing
of insulation is influenced by the volume of the insulation.
DC testing of insulation is influenced by the volume of the insulation because the larger
the volume of insulating material, the greater the overall resistance it offers to current
flow, resulting in a higher measured insulation resistance value when tested with a DC
voltage; essentially, a larger volume provides more space for the electrical field to
distribute, minimizing the likelihood of leakage currents through the insulation material.
, ✔✔What type of protection does a CO or IAC relay typically provide?
a) overvoltage
b) undervoltage
c) overcurrent
d) over temperature - ✔✔Answer: c) overcurrent
✔✔When testing medium-voltage cables, after reaching the maximum intended voltage
level during a high potential test and completion of the intended time duration, the test
set operator should limit exceeding the specified time and voltage parameters by
a) turning the test set supply switch to off.
b) applying a ground to the equipment.
c) returning the test set voltage control to its zero position.
d) disconnecting the test set output lead. - ✔✔Answer: C) Returning the test set voltage
control to its zero position
✔✔Circuit Switchers are devices that
a) have a current interrupting rating higher than their circuit breaker counterparts.
b) are used in low voltage reversing-motor applications.
c) are protective devices that integrate overcurrent protection and circuit isolation.
d) are often used for transformer protection, where the majority of faults are limited in
magnitude - ✔✔Answer: D) Are often used for transformer protection, where most faults
are limited in magnitude
✔✔Which wire type is used by switchgear manufacturers for control wiring?
a) THHN
b) SIS
c) THW
d) RHH - ✔✔Answer: b) SIS (Solid Insulated Switchgear
✔✔Which of the following devices commonly contains a discharge resistor?
a) Hall Effect transducer
b) Rogowski coil current transformer
c) Power factor correction capacitor
d) Vacuum bottle - ✔✔Answer: c) Power factor correction capacitor
✔✔When working in a permit required confined space, a retrieval system must
a) be available on the premises.
b) include a motor operated hoist.
c) include self-contained breathing apparatus.
d) provide for non-entry rescue of the entrant - ✔✔Answer: d) Provide for a non-entry
rescue of the entrant
✔✔A contactor is not used in
