Learn How Electrical Systems Deliver and Control Power Safely
Chapter 2 follows electricity from the branch circuit back toward its source. It explains how circuits are arranged, how loads are calculated, how services enter a building, how conductors are protected from overcurrent, and how grounding and bonding create an effective fault-current path.
For beginner and journeyman electricians
Five Core Chapters
Why Chapter 2 Matters
NEC Chapter 2 matters because it sets the rules for safely distributing electricity and protecting people, wiring, and equipment from hazards like electric shock, overloads, and short circuits.
What You Will Learn
By the end of this chapter, learners should be able to:
- Recognize the purpose of branch circuits
- Identify common GFCI and AFCI applications
- Calculate basic branch-circuit, feeder, and service loads
- Recognize the major parts of an electrical service
- Coordinate conductors with overcurrent protection
- Distinguish grounding from bonding
- Locate and apply frequently used Chapter 2 tables