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Free Journeyman Electrician Practice Quiz — NEC Code Questions

Practice journeyman-style NEC questions with plain-language explanations and code citations. The free practice quiz covers the most commonly tested topics on state journeyman electrician licensing exams.

What the Quiz Covers

Grounding and bonding (NEC Article 250)
Branch circuits and receptacles (NEC Article 210)
Load calculations (NEC Article 220 / Article 120 in 2026 NEC)
Conduit fill (NEC Chapter 9, Tables 4 and 5)
Voltage drop calculations (K-factor formula)
Motor circuits (NEC Article 430)
Services and disconnecting means (NEC Article 230)
EVSE and solar PV (NEC Articles 625 and 690)

How to Use the Quiz

Each question includes three progressive hints: (1) the NEC index keyword to look up, (2) a plain-language restatement of the question, and (3) the exact NEC article, table, or section. After answering, a full explanation with the correct code citation is shown.

Sample Question

Q: What is the maximum number of disconnecting means permitted for a single service?

A: Six. NEC 230.71(A) limits the service disconnecting means to a maximum of six operations of the hand. [Source: NEC 230.71(A)]

Site Navigation

The answers and content on this site are for educational purposes only. Please verify with your code book and your journeyman or master electrician. JavaScript is required to view the full interactive site.