In their February 2026 article, CDM Smith's Lilly Vang, PE and Josh Hunter, PE wrote: “Distribution transformers are a vital component of any electrical system because they step voltage up and down to meet the requirements for power transmission and load support. For this reason, it is important — especially during design and construction — to understand the limitations and requirements for installing a distribution transformer.”
Inspired by that sentiment, this edition of the EC&M Member’s Only quiz series is all about transformers. Take this five-question quiz and put your knowledge about transformers and their NEC requirements to the test. After submitting your answers, you can enter for a chance to win a $25 gift card to Amazon! Note: You don’t have to get all the answers correct to win.
Want to learn more (or get some hints)? Read “Decoding NEC Art. 450 for Distribution Transformers” by Vang and Hunter.
About the Author
Michael Morris
Michael Morris is Editor for EC&M. He is also Editor for EC&M's sister publications Electrical Wholesaling and Electrical Marketing. Email him at [email protected].