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- primary injection on breakers
  
  Electrical Testing Talk 2
  
  I still do not have a 100 % down on a great structure on how to remember what exactly to look for or what to test on primary injection (including name plates,...
  
  Last post by Csloat217 3 Days Ago
- What is the value of the third resistor?
  
  NETA Level 2 Exam 2
  
  A three-branch parallel circuit has a total resistance of 385.83 ohms. Two of the resistors are 680 ohms and 1500 ohms. What is the value of the third...
  
  Last post by cbmcbride 4 Days Ago
- Resistor Circuit Practice Questions
  
  NETA Level 2 Exam 7
  
  Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is A. 138 B. 1,389 C. 5,700 ...
  
  Last post by cbmcbride 4 Days Ago
- Which is not a main factor in accidents?
  
  NETA Level 2 Exam 1
  
  Hard to define "major". I think a variety of different factors including operator error, mismanagement of equipment, and poor communication and training all...
  
  Last post by cbmcbride 4 Days Ago
- leve3
  
  NETA Level 3 Exam 0
  
  I would like to join a level 3 group study
  
  Last post by Alphonso 5 Days Ago
- PT Testing-Negative Tip Up
  
  Electrical Testing Talk 1
  
  We have been power factor testing oil filled potential transformers of different primary voltage levels and we have been getting some tests that are exhibiting...
  
  Last post by backpack96 1 Week Ago
- Transformer Bushing and Oil Replacement methods
  
  Electrical Testing Talk 1
  
  Hello, Just curious to see if anyone has a best practice method for bushing replacement on a smaller distribution transformer. The oil will have to be...
  
  Last post by backpack96 1 Week Ago
- NETA LEVEL 3 study group
  
  NETA Level 3 Exam 2
  
  Is there a level3 study group out there?
  
  Last post by testguy 1 Week Ago
More topics: Electrical Testing Talk | Relay Testing Talk | Safety & Arc-Flash | NETA Exam Prep | NICET Certification Talk
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Technical Articles
- Fiber Optic Cable Fundamentals and Testing Explained
  
  In the electrical power industry, optical fiber products are used extensively in communications with protection, monitoring, and control devices. Continue Reading
  
  Posted By testguy January 18, 2022
- Transformer Tap Changers: Basic Principles and Testing Explained
  
  The easiest way to change the output of a transformer is by either changing its input voltage or by changing the number of turns in the windings. Tap changer switches provide an external means to... Continue Reading
  
  Posted By testguy December 21, 2021
- Inverse Time Overcurrent Relays and Curves Explained
  
  Overcurrent relaying is one of the most simple and economical types of protection used for power system feeders, transformers, generators and motors. Since the advent of simple electromechanical... Continue Reading
  
  Posted By testguy July 28, 2021
- Power Factor Testing: Voltage Considerations Explained
  
  The first step in any comprehensive testing approach is to create a plan that ensures the safety of both the equipment under test and personnel performing the test. Keeping the device under test safe... Continue Reading
  
  Posted By testguy January 4, 2021
- Motor Nameplate and Ratings Explained
  
  We explain the markings found in NEC along with other common terms and ratings included on motor nameplates. Continue Reading
  
  Posted By testguy August 30, 2020
- Electrical Drawings and Schematics Overview
  
  Designing, installing, and troubleshooting of electrical systems requires the use of various drawings to give engineers, installers, and technicians a visual representation of the systems they work... Continue Reading
  
  Posted By testguy July 19, 2020
- Insulating Liquids: Basic Properties, Types and Applications Explained
  
  Fluid inside electrical apparatus is the lifeblood that serves both as a dielectric and a cooling medium. Continue Reading
  
  Posted By testguy June 25, 2020
- 4 Critical Tests for Evaluating HV Circuit Breaker Performance
  
  Regardless of the breaker type, its important to test their components regularly to help ensure proper operation in case of a system fault or switching operation. Continue Reading
  
  Posted By testguy March 9, 2020
- Power Quality Analysis: Basic Theory and Applications Explained
  
  There is no such thing as perfect power quality in the real world. Service interruptions, equipment malfunction, and excess power consumption are all common symptoms of poor power quality. Continue Reading
  
  Posted By testguy November 23, 2019
- Magnetron Atmospheric Condition (MAC) Testing Principles
  
  Unlike the hipot test, testing vacuum interrupters utilizing magnetron atmospheric condition (MAC) principles can provide a viable means for determining the condition of vacuum interrupters prior to... Continue Reading
  
  Posted By testguy September 15, 2019
- Electrical Power System Studies Explained
  
  There are many different types of power system study, each with their own special purpose and calculation method. Each analysis is unique to a particular power system, any changes within the system... Continue Reading
  
  Posted By testguy August 9, 2019
More Technical Articles...
Popular on TestGuy
- Transformer Practice Exam
  
  NETA Level 2 Exam 22
  
  What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV? A. 4 kVA B. 0.25 kVA C. 16...
  
  Last post by ebarner777 4 Weeks Ago
- NETA IV Practice Exam Questions - 2022
  
  NETA Level 4 Exam 18
  
  See practice questions below: Feel free to provide input on solutions
  
  Last post by epenland June 29, 2022
- Am I missing something here? Is the right answer here? If so can someone explain?
  
  NETA Level 2 Exam 17
  
  A 4-20mA single CT has a max range of 150 amp what is the amps at 14mA? 140A 105A 150A 90A
  
  Last post by Jamo33 March 22, 2022
- VLF Dead break terminations - 21.1kv test voltage recommendations
  
  Electrical Testing Talk 16
  
  We are out on a solar farm testing 35kv cable with Dead break terminations. The termination is 21.1kv rated but 35kv class. Cable is 35kv xlpe cable. Neta...
  
  Last post by ericnessl October 27, 2021
- Dear NETA. I Passed!!
  
  NETA Level 2 Exam 15
  
  Dear NETA, A few months ago I posted these questions under the thread **Remembered NETA 2 questions**. After soaking in all input from this forum (thank you...
  
  Last post by JASONDOLANSKY 4 Weeks Ago
- Testing into open breaker with line energized.
  
  Electrical Testing Talk 11
  
  So this is something I just thought to be pretty much standard practice. Don’t Meg cable into a breaker with an energized line side. Today I was asked where...
  
  Last post by cnowak March 8, 2022
- ANSI Numbers help
  
  NETA Level 2 Exam 9
  
  I know there is no easy way to remember all of the ANSI numbers that would be found on the NETA 2 test. However if anyone has any tips or tricks to help you...
  
  Last post by alf583 November 12, 2021
- Dry type XMFR - 7.5kV rated cable in a 25kV system?
  
  Electrical Testing Talk 7
  
  Hello all, I recently was testing a 750kVA dry type distribution transformer for regular maintenance. The transformer system voltages are 25kV - 600/347V....
  
  Last post by bec51392 December 12, 2021
More topics: Electrical Testing Talk | Relay Testing Talk | Safety & Arc-Flash | NETA Exam Prep | NICET Certification Talk
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4. NICET Electrical Power Testing
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I still do not have a 100 % down on a great structure on how to remember what exactly to look for or what to test on primary injection (including name plates,...

A three-branch parallel circuit has a total resistance of 385.83 ohms. Two of the resistors are 680 ohms and 1500 ohms. What is the value of the third...

Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is A. 138 B. 1,389 C. 5,700 ...

Hard to define "major". I think a variety of different factors including operator error, mismanagement of equipment, and poor communication and training all...

I would like to join a level 3 group study

We have been power factor testing oil filled potential transformers of different primary voltage levels and we have been getting some tests that are exhibiting...

Hello, Just curious to see if anyone has a best practice method for bushing replacement on a smaller distribution transformer. The oil will have to be...

Is there a level3 study group out there?

What kVA rating is required for a transformer that must handle a maximum load current of 8 A with a secondary voltage of 2 kV? A. 4 kVA B. 0.25 kVA C. 16...

See practice questions below: Feel free to provide input on solutions

A 4-20mA single CT has a max range of 150 amp what is the amps at 14mA? 140A 105A 150A 90A

We are out on a solar farm testing 35kv cable with Dead break terminations. The termination is 21.1kv rated but 35kv class. Cable is 35kv xlpe cable. Neta...

Dear NETA, A few months ago I posted these questions under the thread **Remembered NETA 2 questions**. After soaking in all input from this forum (thank you...

So this is something I just thought to be pretty much standard practice. Don’t Meg cable into a breaker with an energized line side. Today I was asked where...

I know there is no easy way to remember all of the ANSI numbers that would be found on the NETA 2 test. However if anyone has any tips or tricks to help you...

Hello all, I recently was testing a 750kVA dry type distribution transformer for regular maintenance. The transformer system voltages are 25kV - 600/347V....

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Dear NETA, A few months ago I posted these questions under the thread Remembered NETA 2 questions. After soaking in all input from this forum (thank you...