[Journeyman] 13. Overcurrent Protection and Device Ratings

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: * Explain how overloads, short circuits, and ground faults relate to overcurrent under the 2023 NEC. * Identify standard fuse and circuit-breaker ampere ratings listed in NEC Section 240.6(A). * Apply the three conditions required to use the next-size-up overcurrent rule in NEC 240.4(B). * Distinguish feeder conductors from multioutlet branch circuit conductors when applying rounding rules. * Implement a decision rule to avoid common exam traps when sizing overcurrent protective devices. This independent study tool helps you prepare for journeyman electrician examinations. For additional resources, visit https://open-exam-prep.com/practice/journeyman-electrician and subscribe to our YouTube channel at https://www.youtube.com/@Open-exam-prep . Sources checked: September 28, 2026 https://www.nfpa.org/codes-and-standards/nfpa-70-standard-development/70 https://www.tdlr.texas.gov/electricians/elecexam.htm