General - Motors are a common type of load used to run fans, pumps, and more. They convert electrical energy to mechanical energy, an...

Kirchoff's Laws are statements about the nature of current and voltage. Unlike Ohm's Law, which describes the behavior of devices in a...

The dominant form of power generation, transmission, and distribution in the United States is via three-phase. Three-phase power uses...

At its most basic, power is the product of a current and a voltage at any point in time. In other words: Pn = Vn In Where: Pn is the...

Ohm's Law is the most important equation in all of electrical engineering. It is simple, used all the time, and underpins the physics of...

CAD stands for "computer-aided design". Taken literally, that could mean a ton of different things, since engineers use computers for...

General - Transformers are one of the most common components of any electrical power system. People see them all the time but don't know...

Scattered throughout standards like the National Electrical Code, you'll find reference to an entity known as "The Authority Having...

General - If you look closely at NEC Article 311 (in the 2020 edition of the Code), you'll see that there are ampacity tables referenced...

Panelboards, like the one pictured below, can be found in virtually all buildings with electrical service. Switchgear and switchboards...

Growing up, I didn't know what I wanted to be. I liked math and science, and, as I got older, I realized that I particularly liked...

Schedules are the lifeblood of a successful project. Big or small, expensive or lower-budget, setting a good schedule helps you...

A short circuit, also known as a fault, occurs when energized conductors inadvertently come into contact with one another or another...

I once had a professor tell me that grounding was the "black magic" of the electrical world. I thought it was funny until I started...

Transformers are an essential part of AC power systems. It was transformers that brought about the AC revolution across the world, thanks...

General - The 2020 edition of the National Electrical Code outlines the requirements for raceways, channels for routing conductors and...

Voltage Drop is the loss of voltage in a non-ideal conductor. In other words, conductors have an impedance, a resistance and a reactance,...

Wind power is ubiquitous. Massive wind turbines can be seen from miles away all across the United States. While the inner workings of...

When reading through NEC ampacity tables you'll notice that many make reference to an assumed "thermal resistivity of 90°C*cm/W". What's...

Solar photovoltaic (PV) systems are capable of generating large amounts of electrical power by interconnecting smaller solar modules...