|  | | | | | One of the most often mentioned and misunderstood power quality issues we see with commercial, industrial, and power-generating electrical equipment is harmonics. This is Part 1 of a multi-part series to discuss how to identify, monitor, diagnose, and deal with harmonics in large electrical systems. |
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| | | In a recent press release, Walmart announced plans to install new electric vehicle (EV) fast-charging stations at thousands of Walmart and Sam’s Club locations across the country. |
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| | | Whether located inside or outdoors, premises wiring systems powered by an electric utility have what is known as an electrical service. It is the portion of the electrical system from the utility-defined point of connection to the input terminals of the main overcurrent device — although strictly speaking (not included in this definition), the entr... |
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| | Advertisement | Read now to improve overall outcomes in different applications. By establishing a proactive safety plan, electrical professionals can make a difference in reducing electrical hazards in the workplace, which saves money, downtime, and lives. |
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| | | Arc flash reduction methods must be considered before working on energized electrical equipment for personnel safety. The idea behind energy reduction is to place energized electrical equipment in a state where less arc energy is available when an arcing fault occurs. These techniques range from the obvious (de-energize!) to more complex and costly... |
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| | Advertisement | With a spotlight on electrical products and systems, the Facilities Expo has solutions for any building challenge you might face. Here you will learn from industry experts, network, and explore our solution packed exhibitor floor—all for FREE! |
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| | | A facility manager reported its uninterruptible power supply (UPS) was constantly alarming on high voltage during random periods throughout the week. The voltage would occasionally reach or exceed on average 108% of nominal. |
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| | | Do you know an up-and-coming young electrical professional who has shown extraordinary results on the job? If so, nominate him or her for consideration as an EC&M Under 30 All-Star. The deadline is April 24. |
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| | | With the 2020 revision of the NEC, Art. 242 replaced two individual Articles that appeared in earlier editions of the Code – Art. 280 [Surge Arrestors] and Art. 285 [Transient Voltage Surge Suppressors (TVSSs)]. Implementing a good strategy for overvoltage protection encompasses the material contained in both of those prior Articles. |
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| | | Join us for this members-only editorial event as Randy Barnett, Electrical Codes Program Manager for NTT Training, puts the grounding and bonding rules of the NEC into perspective. |
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| | | This gallery features new product innovations in metering and monitoring equipment. Click through the following four slides to see the latest products, including a fire alarm system, power quality meter, data acquisition server, and more. |
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| | | In Errata No. 70-23-3, issued on March 24, 2023 ,the National Electrical Code Panels 6, 7, 10, 14, 15, and the NEC Correlating Committee note the following errors in the 2023 edition of NFPA 70, National Electrical Code. |
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| | | Case study demonstrates the importance of looking before you leap when investigating PQ problems. The operator of a large solar farm was experiencing nuisance interruptions, causing significant downtime. Read on to see what the power quality investigation uncovered. |
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| | | Take this quiz about circuit breaker safety and enter for a chance to win a $25 gift card to Amazon, iTunes, or Cabela’s! |
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