NETA III Exam Questions And Correct
Answers| Updated 2026
The alternate source for emergency systems are required to be equipped with
ground-fault protection of equipment.
False
Which ANSI/IEEE standard covers SF6 circuit breakers?
C37.04
You measure the winding resistance of a 12.4kV, 1000kVA, Delta-Delta connected
transformer with a 100A test set. H1-H2 measures 42.0 microhms, H2-H3
measures 41.9 microhms, and H3-H1 measures 84.0 microhms. What can you
conclude from these readings?
One phase of the transformer is open.
When monitoring for entries involving a decent into atmospheres that may be
stratified, the envelope should be tested at a distance of approximately _____ feet
in the direction of travel and to each side.
,4
The transformer manufacturer should be consulted if winding-resistance test
values vary by more than _____ percent from factory test values or between
adjacent phases according to NETA acceptance testing standards.
2
A DC shunt motor should never be operated:
with the field circuit open
What is the expected torque (pound-feet) value of a 3/8" Grade 5 bolt?
20
The generally accepted limits of deviation from the nominal 60Hz utility power
frequency is:
.50Hz
Power Factor testing is least effective on which of the following?
MV Cable
,Which of the following insulating liquid tests is optional when maintenance
testing a 13.2kV-4.16kV 1500kVA transformer with silicone fluid per NETA
standards?
ASTM D1298
Panelboards equipped with snap switches of rating 30 amps or less shall be
provided with over-current protection of not more than _____ .
200 amps
Underground service conductors between the terminals of service equipment and
service lateral or underground service conductors are termed as _____ .
Service Entrance Conductors
What is a dual element fuse used for?
Operate with a temporary overload
The full-load current for a single-phase alternating current 115 volt, 1 horsepower
motor is which of the following:
16 A
, Infrared surveys should be performed during periods of maximum possible
loading but not less than _____ % of rated load of the electrical equipment being
inspected.
40
Decreasing the opening time of the overcurrent protective device will decrease
Arc-Flash hazards.
true
In a wye connected system, without neutral grounding, zero sequence currents
are:
zero
When evaluating insulation test results on a medium-voltage, air-magnetic circuit
breaker, what quantity is evaluated?
watts-loss
In accordance with NETA and IEEE standards, the correct acceptance test voltage
(dc) for 35KV rated EPR 133% insulation level cable is?
Answers| Updated 2026
The alternate source for emergency systems are required to be equipped with
ground-fault protection of equipment.
False
Which ANSI/IEEE standard covers SF6 circuit breakers?
C37.04
You measure the winding resistance of a 12.4kV, 1000kVA, Delta-Delta connected
transformer with a 100A test set. H1-H2 measures 42.0 microhms, H2-H3
measures 41.9 microhms, and H3-H1 measures 84.0 microhms. What can you
conclude from these readings?
One phase of the transformer is open.
When monitoring for entries involving a decent into atmospheres that may be
stratified, the envelope should be tested at a distance of approximately _____ feet
in the direction of travel and to each side.
,4
The transformer manufacturer should be consulted if winding-resistance test
values vary by more than _____ percent from factory test values or between
adjacent phases according to NETA acceptance testing standards.
2
A DC shunt motor should never be operated:
with the field circuit open
What is the expected torque (pound-feet) value of a 3/8" Grade 5 bolt?
20
The generally accepted limits of deviation from the nominal 60Hz utility power
frequency is:
.50Hz
Power Factor testing is least effective on which of the following?
MV Cable
,Which of the following insulating liquid tests is optional when maintenance
testing a 13.2kV-4.16kV 1500kVA transformer with silicone fluid per NETA
standards?
ASTM D1298
Panelboards equipped with snap switches of rating 30 amps or less shall be
provided with over-current protection of not more than _____ .
200 amps
Underground service conductors between the terminals of service equipment and
service lateral or underground service conductors are termed as _____ .
Service Entrance Conductors
What is a dual element fuse used for?
Operate with a temporary overload
The full-load current for a single-phase alternating current 115 volt, 1 horsepower
motor is which of the following:
16 A
, Infrared surveys should be performed during periods of maximum possible
loading but not less than _____ % of rated load of the electrical equipment being
inspected.
40
Decreasing the opening time of the overcurrent protective device will decrease
Arc-Flash hazards.
true
In a wye connected system, without neutral grounding, zero sequence currents
are:
zero
When evaluating insulation test results on a medium-voltage, air-magnetic circuit
breaker, what quantity is evaluated?
watts-loss
In accordance with NETA and IEEE standards, the correct acceptance test voltage
(dc) for 35KV rated EPR 133% insulation level cable is?
