First published in 1979, NFPA 70E, Standard for Electrical Safety in the Workplace, has evolved tremendously over the years and is arguably the premier electrical safety work practices standard available to the electrical worker. The current 2024 edition is 113 pages, three chapters, and 19 Informative Annex sections. Many sources of information and safety knowledge are embedded in these pages, …
Protective relays are critical power systems components, and it is essential to design and use them properly to detect power system issues. As NETA-certified technicians, we must be familiar with the purpose and operation of various types of protective relays. 1. Which type of relay was the earliest design for protective relaying? a. Interconnector relay b. Electromechanical relay c. Static …
On a recent family vacation to Florida, this author was amazed at the number of locations openly advertising the purchase of medical marijuana. This discovery highlighted the need to revisit current information on the legalization of medical and recreational marijuana (Figure 1). With recreational or medical marijuana use now legal in many US states, workplaces should review their health and …
The saying, “Everything’s bigger in Texas,” has never sounded better than when it refers to NETA’s PowerTest24 Conference scheduled for February 26 to March 1, 2024, at the Hilton Anatole in Dallas, Texas. Early registrations are on pace to make this year’s conference the largest ever hosted by NETA, and it wouldn’t be possible without the invaluable sponsors and speakers …
NETA BOARD AND MEMBER MEETING September 7–8, 2023Las Vegas, Nevada NETA’s fall board and member meetings held in Las Vegas focused on members, PowerTest, industry awareness, certification, and standards development. The board meeting heavily focused on the strategic initiatives for the upcoming fiscal year. The member meeting included updates on association programs, as well as the first Accredited Representative/Technician Representative …
Electrical Test Tech LLC (ETT) works with local utility companies, electrical contractors, and facility maintenance contractors for various federal and commercial facilities in the Washington DC, Maryland, and Virginia region. Their work consists of acceptance testing and maintenance testing. ETT was founded by Dave Haskin of Welcome, Maryland, in 2019. Haskin has been working in the electrical testing industry since …
Established in the late 1800s, Megger has been designing and making test and measurement instruments that perform electrical measurements for preventative maintenance, troubleshooting, and commissioning for decades. Megger products are categorized into seven core application segments: cable test and diagnostics, protection relays and systems, circuit breakers, transformer test and diagnostics, low-voltage installations, general electrical testing, and motor and generator testing. …
ANSI/NETA ECS–2020 REVISION IN PROCESS A standards revision is in process for ANSI/NETA ECS, Standard for Electrical Commissioning of Electrical Power Equipment & Systems, following the American National Standard process, with a scheduled release in 2024. NETA ECS-202X will supersede the 2020 Edition. A recirculation ballot and additional public comment period are projected for mid-November through mid-December 2023. ANSI/NETA …
After a power or distribution transformer is disconnected from the power grid or when DC current is applied, such as when a routine winding resistance measurement test is performed, the transformer core is likely to have some remnant magnetism. This remnant magnetism will increase the magnitude of the already high inrush over current levels seen when a transformer is energized. …
In commercial and industrial power systems, harmonic currents can create a variety of issues, including increased power losses and potential damage to equipment. This article describes the various types of power losses associated with neutral and ground harmonic currents with a focus on resistive losses, transformer losses, and dielectric losses in distribution and power factor correction capacitors, and how these …