What a lot of people don't realize is that the foundation for understanding the NEC rules for electrical installations is electrical theory! Whether you're a first-year apprentice still struggling to understand the difference between a volt or ampere, or a veteran electrician trying to sharpen your troubleshooting skills, this product has something for you.

We're sharing this clip from the program to introduce you to the importance of this topic. Please feel free to share this with your friends and co-workers, and for more videos and content on this topic, check out our Electrical Theory Video Library that includes the full program and digital textbook.
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The content below is extracted from Mike Holt's Understanding Electrical Theory for NEC Applications textbook.

Click here or on the page thumbnail to view or download the PDF. (3 pages, 576 KB) Click on the image above to watch the video If you’re going to succeed in the electrical trade, you’re going to need a good understanding of the “Formula Wheel.” The Formula Wheel combines the Ohm’s Law Formula Circle and Power Formula Circle (Watt’s Law). Whether you’re an electrical apprentice just starting out or have been working in the trade for a while, there’s no doubt that you will need to know how to use the Formula Wheel. Take the time to read the attached text and watch the video where Mike explains this essential tool and how it’s applied using real-life examples.

For more information on this topic, get a copy of Mike Holt's Understanding Electrical Theory video program and textbook.

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