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TestGuy is a free online community dedicated to the fine art of power distribution testing, maintenance and troubleshooting. We offer resources to help field technicians gain the knowledge necessary to properly test, assess, and validate electrical equipment.
Sign Up Log InSharpen your skills with our collection of quizzes on electrical safety, maintenance & testing of electrical equipment and industry standards.
Tech Quiz Study GuideIn the electrical power industry, optical fiber products are used extensively in communications with protection, monitoring, and control devices. Continue Reading
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
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
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
We explain the markings found in NEC along with other common terms and ratings included on motor nameplates. Continue Reading
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
Fluid inside electrical apparatus is the lifeblood that serves both as a dielectric and a cooling medium. Continue Reading
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
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
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
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
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Discuss the NICET Electrical Power Testing certification (Level 1-4).
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Dear NETA. I Passed!!
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...