[Journeyman] 14. GFCI and AFCI Protection: Different Hazards and Rules

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: * The distinct safety hazards addressed by GFCI personnel shock protection versus AFCI arcing-fire protection. * Why Class A GFCI devices sense conductor current imbalance across 4 to 6 mA thresholds without needing an equipment grounding conductor. * How AFCI protection identifies hazardous arcing waveforms without replacing standard overcurrent and overload protection. * Why code edition and occupancy type must be verified before determining required device locations under the 2023 NEC. * How to analyze exam scenarios involving dwelling unit requirements, dual-function devices, and common trap choices. This independent study resource supplements official codebook reference and supervised practical training. For practice tools, visit https://open-exam-prep.com/practice/journeyman-electrician and watch video guides 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 and https://www.iccsafe.org/certification-exam-catalog/