Know What You're Solving
When you see a transformer question on your licensing exam, pause before diving into your codebook or calculator. The first step is to identify what type of question you're dealing with. Is it asking for the correct size of overcurrent protection devices? Or is it a basic Ohm’s Law problem asking you to calculate the size of the transformer?
Many test takers waste valuable time—and sometimes answer incorrectly—because they treat all transformer questions the same. Knowing the difference helps you choose the right Article in the NEC, the right table, and the right formula.
Save time, avoid confusion, and boost accuracy by reading the question carefully and determining the goal before doing the math. This habit can help you avoid easy mistakes and improve your overall exam performance.
