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The 2023 National Electric Code Has Arrived!

The 2023 National Electrical Code (NEC) is here! This article covers NEC history, the update process, and a chapter breakdown! Stay tuned in the months ahead for more updates.

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From Here to There – Insights on Alarm Monitoring Communications

This article discusses the pros and cons of every major alarm monitoring system – and what to expect in the future.

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Robots, the Cloud, and Perimeter Hardening – Reflections on GSX 2022

Will the future of security technology rely on artificial intelligence? These are our biggest takeaways from the 2022 Global Security Exchange (GSX) event.

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2020 NEC, Section 800.44 | Installing Overhead Communications Wiring

In the past, Chapter 8 of the NEC has not gotten the attention it deserves. Article 800, General Requirements for Communications Systems, sets the ground rules for the installation of specific types of systems, such as broadband communications systems.

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2020 NEC, Section 712.2 DC | Microgrids and System Directories

Here’s how the 2020 NEC Article 712 has changed and expanded the identification requirements for microgrids and system directories.

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NEC 70, Article 250, Section 250.121(B), Metal Frame of Building or Structure

Article 250 is arguably the most important article in NEC 70, and much of its content is devoted to the proper sizing and installation of equipment grounding conductors. First, let us consider the purpose of an equipment grounding conductor (EGC). We know that EGC’s provide a low impedance path from the equipment to the overcurrent protective device (or ground detector for high-impedance grounded systems) so that a fault condition can be quickly cleared. Hence, EGC’s are a critically important safeguard to persons and equipment.

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Sizing Equipment Grounding Conductors (EGC) Table 250.122: What’s New in the 2020 NEC?

If you turn to Section 250.122 in your NEC, you find information that has assisted electricians sizing equipment grounding conductors (EGC) for longer than most electricians have even been twisting wire.If you were on the job in 1968, you would have turned to Table 250.95 in your NEC for this information instead of Table 250.122, but the information was essentially the same.In 1968 you also would have found that an ungrounded (hot) branch circuit conductor protected by a 6000-amp overcurrent device required no less than a 1200 kcmil aluminum equipment grounding conductor… assuming you were using an aluminum equipment grounding conductor. That information remained unchanged for 50 years. But as the saying goes, “All good things must come to an end.”

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The Isolated Ground

The Isolated Ground (IG) is a type of equipment ground that, in theory, reduces interference experienced by electronics and instrumentation from radio frequency (RF) noise, by connecting that equipment directly to the grounding terminal of the service equipment, without ever making contact with another metal component or grounded surface, that could potentially be serving as an antenna for airborne RF noise.

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What is a Main-Bonding-Jumper? Why Do We Need it?

For our typical AC electrical system, the purpose of the “Main Bonding Jumper” is to connect the equipment grounding conductors (E.G.C.) contained in each branch-circuit and the metal (conductive) service-disconnect enclosure to the Neutral Conductor of the electrical service. The reason for this is: a driven or buried earth ground […]

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The 2023 National Electric Code Has Arrived!

Most Recent

From Here to There – Insights on Alarm Monitoring Communications

Robots, the Cloud, and Perimeter Hardening – Reflections on GSX 2022

2020 NEC, Section 800.44 | Installing Overhead Communications Wiring

2020 NEC, Section 712.2 DC | Microgrids and System Directories

Recently in

NEC 70, Article 250, Section 250.121(B), Metal Frame of Building or Structure

Sizing Equipment Grounding Conductors (EGC) Table 250.122: What’s New in the 2020 NEC?

The Isolated Ground

What is a Main-Bonding-Jumper? Why Do We Need it?

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2020 NEC, Section 800.44 | Installing Overhead Communications Wiring

2020 NEC, Section 712.2 DC | Microgrids and System Directories