# Lesson 5 — Circuit Protection

<p class="block-synopsis">Short circuits, fuses and breakers, and sizing protection from the source current.</p>

**Objectives covered**

- **1.2** — I can determine appropriate circuit breaker values for adequate system protection.

<div class="block-toc">
  <a class="bt-card bt-reading" href="../Block1Reading/Obj02/ECE215_Obj02_Reading.html">
    <span class="bt-kind">Reading</span>
    <h4>Circuit Protection</h4>
    <p>The course reading for Objective 1.2.</p>
  </a>
  <a class="bt-card bt-flashcards" href="L05_Flashcards.html">
    <span class="bt-kind">Flashcards</span>
    <h4>Review deck</h4>
    <p>Key terms, equations, and ideas from this lesson, in a self-test deck.</p>
  </a>
  <a class="bt-card bt-slides" href="../_static/slides/ECE_215_Lesson05.pdf">
    <span class="bt-kind">Slides</span>
    <h4>Lesson 5 deck</h4>
    <p>The slides used in class, as a PDF.</p>
  </a>
  <a class="bt-card bt-practice" href="../downloads.html">
    <span class="bt-kind">Practice Problems</span>
    <h4>Work these before the quiz</h4>
    <p>Ungraded problems with answers, on the downloads page.</p>
  </a>
</div>