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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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2020 National Electrical Code: Article 330 Metal-Clad Cable Type MC

Metal-Clad (MC) Cable is used every day in the electrical industry. The true conduit benders hate it. The value engineering people love it. MC Cable is really a great product, has a wide variety of uses, and can be installed to look good. Let’s take a closer look at this industry workhorse: Metal-Clad Cable. 

MC Cable Definition 

MC Cable, by most common definition, is a factory assembly of one or more insulated circuit conductors enclosed in an armor of interlocking metal tape or a smooth or corrugated metal sheath. The smaller cables should be unsheathed by using an armored cutter like the famous “Roto-Split”. The fittings must be listed and identified for use. If the manufacturer provides anti-short bushings, they can be used. The bushings are not an NEC requirement since the listed MC connectors provide the conductor protection from sharp edges.  

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