Equipment Grounding Conductor

Making Sense of SEER – and Saving Energy Dollars!

In this blog, Gary explains SEER ratings, including the upcoming 2023 changes, as well as the overall impact of efficiency metrics on the HVACR industry.

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Multimeter Safety

Using a multimeter tool incorrectly can cause severe injury or even death. In this blog we review some common multimeter safety practices!

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How Water Quality Monitoring Protects Us

This article explains what water quality monitoring is, methods used to monitor water quality, and how the data collected is used to make decisions that affect you and the environment.

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Detecting the Weapons of War

Gunshot detection systems cannot prevent a gun from firing, but they can buy vital time to alert authorities and save lives. Read about some of the current technology behind gun detection systems in this latest blog.

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Stand-Alone Systems in the 2020 NEC – Article 710

What Changed in 2020 NEC, Article 710? Read on to learn about code changes and additions related to stand-alone power systems.

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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 Grounded Conductor – New Informational Note Article 100 – 2020 NEC

In this 2020 Code cycle a new Informational Note now accompanies the term Grounded Conductor where it is defined in Article 100. The Note has been added to help electricians identify functional differences between Grounded and Grounding Conductors.

In defense of all who have struggled with these terms in the past, both grounded conductors and grounding conductors are in fact grounded. They just have different jobs.

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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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Making Sense of SEER – and Saving Energy Dollars!

Most Recent

Multimeter Safety

How Water Quality Monitoring Protects Us

Detecting the Weapons of War

Stand-Alone Systems in the 2020 NEC – Article 710

Recently in

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

The Grounded Conductor – New Informational Note Article 100 – 2020 NEC

The Isolated Ground

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