NEC 2023 Quick Reference Guide
50 Most-Tested Articles for Your Electrician Exam
A concise, exam-focused summary of every major NEC article — with key requirements, critical tables, and insider exam tips. Download free in seconds.
What's Inside the Guide
General Requirements
Articles 90, 100, 110 — Definitions, scope & working space rules
Branch Circuits & Feeders
Articles 210, 215, 220 — GFCI/AFCI locations & load calculations
Wiring Methods
Articles 300, 310, 314 — Conductor sizing & box fill calculations
Grounding & Bonding
Article 250 — EGC sizing, GEC sizing & bonding requirements
Overcurrent Protection
Article 240 — Standard breaker sizes, tap rules, next-size-up
Motors & Services
Articles 230 & 430 — Motor conductor sizing & service requirements
Key Reference Tables
Table 310.16, 250.122, 314.16(A) & Chapter 9 Table 1 — summarized
Exam Day Tips
5 proven strategies to maximize your score on test day
Why Electricians Love This Guide
- Exam-focused — covers only the articles that appear most on journeyman and master exams
- Quick reference tables — 310.16 ampacity, 250.122 EGC sizing, box fill, and conduit fill
- Exam tips on every article — so you know exactly what to look for in the question
- Print or read on any device — clean PDF designed for readability
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