There are 22 items in this page
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How to use a multimeter like a pro – Clamp meter
Learn how to use a clamp multimeter like a pro, from AC current, DC current, AC voltage, DC voltage, inrush current, resistance, capa...
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How 3 Phase Transformers Work
How do 3 phase transformers work, why are three phase transformers used, how do they produce 480V, 277V, 240V, 208V and 120V. What is...
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The Most Confusing Part of the Power Grid
Geomagnetic storms aren’t the only thing that can make the grid behave in funny ways. There are devices even in your own home that fo...
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Where Does Grounded Electricity Actually Go?
Grounding is one of the most confusing and misunderstood aspects of the grid. Errata: At 10:40, the meter is set to resistance (not v...
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How 3 Phase Transformers Work
How do 3 phase transformers work, why are three phase transformers used, how do they produce 480V, 277V, 240V, 208V and 120V. What is...
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Why Transformers Use kVA Not kW
Why do transformers use kVA and not kW, find out why here. Why transformer rating in kVA why transformer not rated in kW.
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How to Test for Resistance? What is Continuity?
Most electricians know how to use our meters to troubleshoot power issues by finding voltage and amperage. But what about using them...
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What is a contactor and how does it work?
Contactors are heavy-duty electromagnetic switches that are normally used in controlling large lighting loads and motors. They operat...
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Do Breakers Put Out Power? Common Misconceptions
Have you ever wondered HOW breakers actually put out power? The interesting fact is that they don’t actually put out power and this i...
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Let’s Talk About COMBINATION Circuits: Voltage, Current, Resistance, and Power
We have talked about series and parallel circuits. But have you ever wondered how a series circuit works or what it even is? In today...
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Let’s Talk About SERIES Circuits: Voltage, Current, Resistance, and Power
When it comes to confusing terms of the trade, series circuits are definitely among them. Many commercial electricians and wiremen mi...
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Let’s Talk About PARALLEL Circuits: Voltage, Current, Resistance, and Power
Discovering the difference between Series Circuits, Parallel Circuits, and Combination Series-Parallel Circuits can be confusing for...
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Understanding Blueprints: Electrical Symbols Explained
When we are starting to learn to read blueprints (and even after we know how really!), learning what all the symbols stand for can be...
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Blueprints Deciphered: How to Read Commercial Plans (For Electricians)
If it weren’t for drawings, most of us in the construction industry wouldn’t have as much of a grasp on exactly what we were to build...
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Blueprints Deciphered: How to Read Residential Plans (For Electricians)
Most of us in the industry know that in order for us to build something, we must have blueprints to understand exactly WHAT is needed...
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Solar Photovoltaic (PV) Systems, Grounding Electrode System, NEC 2020 – [690.47], (9min:30sec)
How do you properly ground a building’s solar photovoltaic (PV) system? It’s not as difficult as you might think. Take a moment to re...