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. (2 pages, 151 KB) Click on the image above to watch the video “Multiwire” branch-circuits are advantageous in that they save money! They use less wire, smaller raceways, possibly take less time to install, and reduce circuit voltage drop. But multiwire branch-circuits also present some unique hazards if not installed properly. Find out what you need to know about the dangers inherent with multiwire branch-circuits and how to minimize the hazards involved by reading the attached text and watching the video where Mike and the team discuss the theory behind these circuits.

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

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