Maintenance, Repair & Operations

Everything electrical professionals need to know about MRO, including technical advancements and trends in the maintenance, repair and operations of electrical equipment and systems.

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Highlights

Photo 2. This worker is attaching the current clamp from a power quality analyzer to a feeder conductor supplying a three-phase panelboard in a data facility. Study power quality to track down some of those “mysterious” equipment problems.
Aug. 19, 2024
Avoiding these common mistakes in electrical system evaluation and diagnosis leads to increased efficiency and reduced downtime.
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May 6, 2025
Mark Lamendola continues with Art. 110 of the Code and discusses Sec. 110.10.
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May 5, 2025
Weekly Quiz on the 2023 National Electrical Code
EC&M Tech Talk — Separately Derived Systems
May 1, 2025
Randy breaks down everything you need to know about separately derived systems.
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May 1, 2025
Test your knowledge about data centers and enter for a chance to win a $25 gift card to Amazon!
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April 21, 2025
Weekly Quiz on the 2023 National Electrical Code
Announcing the 2025 Product of the Year Category Winners
April 17, 2025
Check out the 36 category winners for this year's competition, and learn how you can help decide the overall winners.
Courtesy of Eaton
NFPA 70B now contains mandatory requirements regarding EMPs for all common electrical system components, along with specific guidance for maintenance of specialized systems, like EV equipment, PV and wind power systems, etc .
April 14, 2025
Learn how to administer safer, more reliable, and more efficient electrical preventive maintenance requirements for EV charging, energy storage, and alternative energy applications...
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April 14, 2025
Weekly Quiz on the 2023 National Electrical Code