NEC Practice Tests

Full-length NEC practice tests simulating real exam conditions for electrician licensing.

42 tests · 1,250 questions · Free · No signup · NEC 2020 · 2023 · 2026
Based on the National Electrical Code (NFPA 70) — NEC 2020, 2023 & 2026 editions covered.  ·  Last reviewed Jun 2026

Mixed NEC Practice Tests — Simulating Real Exam Conditions

These NEC practice tests are different from the article-by-article tests in the NEC Code category. Each test here pulls mixed questions from across the entire National Electrical Code — just like your actual licensing exam does. No single topic dominates. You need to be ready for anything.

This mixed format is the best way to prepare in the final weeks before your exam. If you have been drilling individual articles, these tests show you how you perform when the questions jump unpredictably between topics.

All tests are based on NEC 2026 but many states are still testing NEC 2023 — the core rules are the same, and our tests are tagged by edition where questions specifically reference changed articles.

Exam Strategy: On a mixed NEC exam, do not spend more than 90 seconds on any single question. If you do not know the answer, mark it and move on. Come back to it with the NEC index after you have answered the questions you know. This approach consistently improves scores because it prevents one hard question from eating up time you need elsewhere.
Mixed NEC Articles Timed Exam Practice Wiring Methods & Grounding Load Calculations Motor Circuits Special Occupancies

Which NEC Edition Does Your State Use?

NEC 2020, 2023, and 2026 are all in active use right now — states adopt each edition on their own timeline.

See all 50 states

Data as of August 2026. verified against a primary source · reported by secondary trackers · unverified — NEC adoption is an ongoing legislative process and cities/counties can differ from their state or lag behind it. This table is a study aid, not a legal reference — always confirm the current requirement with your state licensing board or local Authority Having Jurisdiction (AHJ) before an exam or an installation.

Still tested in several states

NEC 2020 Practice Tests

20 tests · 600 questions

NEC 2020 is the edition several state licensing boards were still testing as of 2026 — some states lag a full cycle or two behind the newest published NEC. If your state board has not confirmed a newer adoption date, these tests match what you will likely see on exam day.

  • Uses 2020-era article numbering (for example, Table 310.16 for conductor ampacity).
  • Covers the same core articles as the newer editions — grounding, branch circuits, services, wiring methods — with 2020-specific values where they differ.
  • Good starting point if you are not yet sure which edition your state exam covers.
Most widely adopted edition right now

NEC 2023 Practice Tests

20 tests · 600 questions

NEC 2023 is the edition most state licensing boards have adopted as of 2026. If you have not confirmed your state's exact edition yet, this is the safest default to study.

  • Reflects 2023 renumbering, like 310.14 replacing the old 310.15(B)(16) ampacity references.
  • Includes 2023-specific rule expansions — broader GFCI/GFPE requirements, updated pool receptacle setbacks, and more.
  • Largest and most current section of the mixed NEC practice library.
Coming soon

NEC 2026 Practice Tests

2 tests · 50 questions

NEC 2026 is the newest published edition. Tests for this edition are in development and will be added here as state boards begin adopting it.

In the meantime, our NEC Code Practice Tests category may already have 2026-updated content — a good place to check if your state has adopted the newest edition.

How to Get the Most From These Mixed Tests

Mixed NEC tests expose your weak spots faster than topic-specific tests. Here is how to use your results:

  1. After completing a test, sort your wrong answers by NEC article.
  2. Any article where you missed 2 or more questions needs more study.
  3. Go back to the article-by-article tests in the NEC Code category for that article.
  4. Read the NEC directly — open the book to that article and read the sections you missed.
  5. Return to mixed tests to verify improvement.

Most-Tested NEC Articles on Mixed Exams

ArticleTopic% of Typical Exam
100Definitions5–8%
210Branch Circuits15–20%
220Load Calculations10–15%
230Services5–8%
250Grounding & Bonding10–15%
300–358Wiring Methods10–15%
310Conductors5–10%
430Motors8–12%
Other articlesVariousRemaining %

NEC Practice Tests — FAQ

Are these tests timed like the real exam?

You can take them untimed for study, or set your own time goal. A good benchmark: the real exam gives you about 2 minutes per question on average. If a 25-question test takes you over 50 minutes, you need to practice using your NEC index faster.

What should I score on practice tests before taking the real exam?

Consistently scoring 80% or above on mixed practice tests is a good sign you are ready. Do not stop at 70% — the real exam has questions you have not seen before, so aim to be comfortably above the passing line in practice.

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