NETA ETT Certified Level 3 Question and answers rated A+
2025/2026
1. A newly installed test is
4160V emergency
generator has an
insulation resistance
value of 150 Megohms
after one minute with
an equipment
tempera- ture of 32
degrees C. Is this
value acceptable per
NETA standards?
2. Which test method
measures
Hydrolyzable
Flouride content in
SF6 gas?
3. The operating speed of
a protective relay is
depen- dent on:
4. According to IEEE
C57.106, which
1/
125
,No Know the ASTM test names what what they test
*Spring Tension
NETA ATS-2017 Table 100.11 *Armature core air gap
*Rate of flux built up
https://testguy.net/content/240-Insulation-
Resistance-Test-Values Know the NETA- https://en.wikipedia.org/wiki/Protective_relay#Types_accord-
ing_to_construction
ATS Insulation Resistance tables
This was originally a 'not question'. This list is not necessarily
conclu- sive. It's simply the 'incorrect' answers to the 'not
question'.
ASTM D2284
[Standard Test Method for Acidity ASTM D877
[Standard Test Method for Dielectric Breakdown Voltage of
of Sulfur Hexafluoride] NETA ATS-
Insulat-
2017 Table 100.13
recommended for routine ing Liquids Using Disk Electrodes]
acceptance of new,
un- processed oil from
a sup-
2/
125
, NETA ETT Certified Level 3
Study online at https://quizlet.com/_afej6x
plier for use in
circuit breakers?
7.
5. Meter Sockets and
me- ter disconnect
switches should
generally be con-
nected on what side
of
a service
disconnecting
means?
6. What size neutral
resis- tor would be
required to limit the
fault current of a
13,800-480Y/277V
1500kVA
Transformer to 5A?
3/
125
, https://hvtechnologies.com/which-oil- I believe that since this is dealing with the neutral, Line-
testing-stan- Neutral voltage (277 V) should be used in the formula. 5 A on
dard-should-you-choose-to- the line will also be 5A on the windings since the
determine-dielectric-breakdown- transformer configuration is a Wye configuration. I also
volt- age/ believe that the impedance of the transformer is negligible in
this calculation since it isn't mentioned in the question and
Know IEEE C57 information. presumably would only limit the fault current further.
Know ASTM tests and
definitions The line side
NFPA 70-2017 Article 230.82(3)
https://
www.electricallicenserenewal.com/
Electrical-Continuing-Ed- ucation-
Courses/NEC-Content.php?
sectionID=40.0
This was originally a True/False
statement question. The answer
stat- ed that the load side is wrong.
The reference above seems to imply
that meter sockets and meter
disconnect switches should generally
be connected on the line side.
Know NFPA 70
55.4
Know Ohm's Law. 277 V / 5A = 55.4
ohms
4/
125
2025/2026
1. A newly installed test is
4160V emergency
generator has an
insulation resistance
value of 150 Megohms
after one minute with
an equipment
tempera- ture of 32
degrees C. Is this
value acceptable per
NETA standards?
2. Which test method
measures
Hydrolyzable
Flouride content in
SF6 gas?
3. The operating speed of
a protective relay is
depen- dent on:
4. According to IEEE
C57.106, which
1/
125
,No Know the ASTM test names what what they test
*Spring Tension
NETA ATS-2017 Table 100.11 *Armature core air gap
*Rate of flux built up
https://testguy.net/content/240-Insulation-
Resistance-Test-Values Know the NETA- https://en.wikipedia.org/wiki/Protective_relay#Types_accord-
ing_to_construction
ATS Insulation Resistance tables
This was originally a 'not question'. This list is not necessarily
conclu- sive. It's simply the 'incorrect' answers to the 'not
question'.
ASTM D2284
[Standard Test Method for Acidity ASTM D877
[Standard Test Method for Dielectric Breakdown Voltage of
of Sulfur Hexafluoride] NETA ATS-
Insulat-
2017 Table 100.13
recommended for routine ing Liquids Using Disk Electrodes]
acceptance of new,
un- processed oil from
a sup-
2/
125
, NETA ETT Certified Level 3
Study online at https://quizlet.com/_afej6x
plier for use in
circuit breakers?
7.
5. Meter Sockets and
me- ter disconnect
switches should
generally be con-
nected on what side
of
a service
disconnecting
means?
6. What size neutral
resis- tor would be
required to limit the
fault current of a
13,800-480Y/277V
1500kVA
Transformer to 5A?
3/
125
, https://hvtechnologies.com/which-oil- I believe that since this is dealing with the neutral, Line-
testing-stan- Neutral voltage (277 V) should be used in the formula. 5 A on
dard-should-you-choose-to- the line will also be 5A on the windings since the
determine-dielectric-breakdown- transformer configuration is a Wye configuration. I also
volt- age/ believe that the impedance of the transformer is negligible in
this calculation since it isn't mentioned in the question and
Know IEEE C57 information. presumably would only limit the fault current further.
Know ASTM tests and
definitions The line side
NFPA 70-2017 Article 230.82(3)
https://
www.electricallicenserenewal.com/
Electrical-Continuing-Ed- ucation-
Courses/NEC-Content.php?
sectionID=40.0
This was originally a True/False
statement question. The answer
stat- ed that the load side is wrong.
The reference above seems to imply
that meter sockets and meter
disconnect switches should generally
be connected on the line side.
Know NFPA 70
55.4
Know Ohm's Law. 277 V / 5A = 55.4
ohms
4/
125
