Electrical Installation – JADE Learning

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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Feeder Conductor Ampacity

Feeders Part 3 Feeder Conductor Ampacity. The conditions of use must be considered when determining the minimum size of a feeder conductor. A continuous load, such as the lighting load in a store building, generates heat in the feeder conductor that must be compensated for. Ambient temperatures above 86oF or more than […]

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Feeders Part 2: Overcurrent Protection

The general rule in 215.3 is that a feeder overcurrent device shall have a rating not less than the noncontinuous load plus 125% of any continuous loads supplied by the feeder. Unless permitted for specific applications, such as motor circuits, the rating of the feeder overcurrent device is selected as […]

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Multiwire Branch Circuits NEC 210.4

A common application of multiwire branch circuits as described in section 210.4 is for a 120/240-volt, single-phase system where three wires do the work of four, the two ungrounded conductors sharing a single neutral.In a 20 amp multiwire branch circuit if the two ungrounded conductors each carry 15 amps, some people think the neutral carries 30 amps, or the combined total of the current on each ungrounded conductor.

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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

Feeder Conductor Ampacity

Feeders Part 2: Overcurrent Protection

Multiwire Branch Circuits NEC 210.4

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