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  • CT Polarity check

    Chris Werstiuk has a great method of taking voltage drops at the components down the line of the CTs to determine where the wires may be flipped in his **Back to the Basics – Current Transformer Testing** **(CT)** pdf. It's step 5 of the pdf you can download from his link here: https://relaytraining.com/current-transformer-testing-ct/?srsltid=AfmBOooy0lQ6Y...

    Posted by Kalbi_Rob on 12-18-2024
  • Electrical Motors: Salient Pole Rotor Vs. Non-Salient Pole Rotor

    When designing or selecting an electrical motor or generator, one critical decision is choosing between a salient pole rotor and a non-salient pole rotor. This choice significantly affects the efficiency, speed, and suitability of the machine for specific applications. Understanding the characteristics and differences between these two types of rotors is ess...

    Posted by TestGuy on 12-11-2024
  • Grow Your Career at ABM: New Opportunities Await!

    ABM has updated its career opportunities once again as of 12/10/24. No matter your experience level, there's an opportunity for everyone. Begin your journey by applying today!

    Posted by TestGuy on 12-11-2024
  • Report Tech Quiz Issues Here

    Thanks to everyone for your continued support. We are actively working to make corrections based on your suggestions.

    Posted by TestGuy on 11-29-2024
  • Report Tech Quiz Issues Here

    * **36. What are the two main components of the insulation in oil-paper insulated power transformers, and what is the role of each component?** *Your Answer: Oil provides mechanical stability, while cellulose improves the breakdown strength of the insulation.* Correct Answer: Cellulose provides mechanical stability, while oil acts as a conductor for the e...

    Posted by SteveM34 on 11-29-2024
  • Report Tech Quiz Issues Here

    The question is: "Which sub-section of NFPA 70E requires that employer's electrical safe work program include a policy on establishing an electrically safe work condition?" The link provided: https://netaworldjournal.org/looking-at-nfpa-70e-2021/ takes you to literature that shows: "110.3 (used to be 130.2) Electrically Safe Work Condition". 110.3 isn't ...

    Posted by SteveM34 on 11-29-2024
  • Acceptable Limits for Low Resistance Testing

    What is the reason to use highest possible current to measure the contact resistance? how would a higher current (say 500A) affect the result as compared to 100A?

    Posted by user834 on 11-27-2024
  • Report Tech Quiz Issues Here

    **NFPA 70, the National Electrical Code, requires Inspections and Tests on equipment over 1000V. Where is this in the code?** *Your Answer: 110.16* Correct Answer: 225.56 Help: The correct code reference is 110.41. as the entirety of 110 part 3 is for installations over 1000v. Section 225 doesn't have a .56 NFPA 70 2023 110.41 Inspections and Tests. (A...

    Posted by RVAsparky on 11-26-2024
  • How Often Should I Take Practice Exams?

    To maximize your learning and preparation, it's recommended to take practice exams regularly. Each exam pulls questions randomly from our database, ensuring a unique experience each time. ## How Many Practice Exams Should I Take? To get the most out of your practice exams, consider the following formula: > (Number of Quiz Questions) / (Total Database Ques...

    Posted by TestGuy on 11-25-2024
  • NETA 2 Exam: Tips and Advice

    I passed the NETA 2 Exam yesterday. I have some pointers. First, there is a lot of electrical theory on the exam. Get comfortable with inductors, capacitors, resistors, series/parallel calculations for all of these, voltage drop calculations. Remember voltage in a loop sums to zero. Taking these practice exams on TestGuy will not be enough. Read the arti...

    Posted by ebsaucedo on 11-24-2024
  • NETA 2 Exam Questions HELP

    Your first question seems to be missing alot of information. I have seen something more like: "An overcurrent relay is used to protect a feeder, with a CT ratio of 300/5A. The minimum fault current in the feeder at the CT location is estimated to be I(f-min)=950A. What will the primary pickup current of this relay? A)585A, B)665A, C)675A, D)655A " Which you ...

    Posted by Kalbi_Rob on 11-21-2024
  • Motor TOC Relay Curve - Protection Zone?

    When you look at the motor running overload thermal limit curve, it is starting right after the pick up point.

    Posted by spacific on 11-18-2024
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