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.
Michael Morris is Editor for EC&M. He is also Editor for EC&M's sister publications ElectricalWholesaling and Electrical Marketing. Email him at [email protected].
