Checked against primary sources 2026-09-05

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Which NEC Edition Is on the NC Electrical Exam: 2020

North Carolina examinations use the 2020 National Electrical Code. That is one edition behind the 2023 book the state has adopted but not put in force, and two behind the 2026 book most new study material is written on. This page says what that costs you and which numbers to watch.

Test yourself: thirty free questions, timed

The short answer

The Board's Examination Information Handbook lists the National Electrical Code, 2020 edition, as required for all examinations.

Where the National Fire Alarm Code is allowed, which is Limited, Intermediate, Unlimited, SP-SFD and SP-FA/LV, the edition is NFPA 72 2013.

Neither of those is the newest printing on a supplier's shelf. Buy the edition the list names rather than the edition the shop has.

Why it is still 2020

The exam follows the code the state enforces, and North Carolina enforces the 2020 North Carolina Electrical Code, which is the 2020 NEC with state amendments. The Office of State Fire Marshal marks it as the current code, effective 1 November 2021.

The 2023 North Carolina Electrical Code exists, has been through the Building Code Council and the Rules Review Commission, and carries a published status of indefinite delay. It has not taken effect.

The 2026 National Electrical Code has not been adopted in North Carolina at all. So the examination sits on 2020 and will keep sitting there until the state moves.

The next edition page follows the 2023 adoption and what is holding it.

The problem with new study material

Most electrical exam material published in the last year is written on the 2026 numbering, and ours is too. The rules and the arithmetic are unaffected by that. The section numbers are not.

Our record of the moves runs from the 2023 edition to the 2026 edition. North Carolina tests on the 2020 book, which is a further edition back, and we have not built a 2020 crosswalk. So treat everything below as a warning about which numbers to check in your own book, not as a translation table for 2020.

The safe habit on an open book paper is simple. When a question or a study note gives you a section number, find the rule in your own 2020 book by subject rather than by number, and trust your table of contents over anybody's citation.

The numbers that moved between 2023 and 2026

These are the ones our crosswalk records, each one read in the 2026 text.

• Branch circuit, feeder and service load calculations were Article 220 and are Article 120 in the 2026 book. Article 220 is vacant in 2026.
• Energy management systems were Article 750 and are Article 130.
• Overcurrent protection of transformers is 450.5 in the 2026 book, and 450.3 in the 2023 edition.
• Protection against physical damage in Chapter 3 wiring methods is 300.6 in the 2026 book, and 300.4 in the 2023 edition.
• Wire bending space and deflection of conductors is 312.9 in the 2026 book, and 312.6 in the 2023 edition.
• The bar on re-bonding neutral to ground downstream is 250.24(B) in the 2026 book, and 250.24(A)(5) in the 2023 edition.
• Article 235, which held branch circuit, feeder and service material for systems over 1000 volts, is gone from the 2026 book, with the material spread across Articles 265 through 268 and grounding at 270.
• The total degrees of bend allowed in one run of EMT is 358.24(B) in the 2026 book, and 358.26 in the 2023 edition.
• Switch connections, including three way and four way switching and the grounded conductor at a switch, are 406.30 in the 2026 book, and 404.2 in the 2023 edition.
• Grounding of snap switches and their faceplates is 406.40(B) in the 2026 book, and 404.9(B) in the 2023 edition.
• Use of white or gray insulation, which the code reserves for the grounded conductor, is 200.8 in the 2026 book, and 200.7 in the 2023 edition.
• Fire pump voltage drop is 695.8 in the 2026 book, and 695.7 in the 2023 edition.
• Voltage drop for sensitive electronic equipment moved down one section, to 647.5 in the 2026 book from 647.4 in the 2023 edition, keeping subdivision (D).
• Fixed electric space-heating equipment counted as a continuous load is 424.5 in the 2026 book, and it sat inside 424.4 in the 2023 edition.

Several of those old addresses are still occupied in the 2026 book by different subjects, which is the expensive kind of move, because a lookup lands on real text that answers a different question.

What did not move

Ampacity is Article 310 in both editions we hold, with the ampacity table at 310.16. Overcurrent is Article 240. Grounding and bonding is Article 250. Boxes are Article 314, with box fill at 314.16. Motors are Article 430. Chapter 9 is still the tables, including Tables 1, 4, 5 and 8.

That covers most of the arithmetic on a contractor examination. It is why our calculators are still useful to a North Carolina candidate even though their table values were read in the 2026 book.

We have not set the 2026 table values against a 2020 printing row by row, so use the tools to learn the method and check any number that decides an answer in the book you are carrying.

What to do about it

Buy the 2020 edition. Work every practice question with that book open. When a worked answer cites a number your book does not match, find the rule by subject and write the 2020 number in the margin, before the examination session, because writing during the examination is prohibited.

Do that for a few weeks and the translation problem disappears, because you stop navigating by other people's citations and start navigating your own book.

The practice hub lists the free question sets and names the ones where the numbering matters most.

Questions people ask

Which NEC edition is the NC electrical exam based on?

The 2020 edition. The Board's Examination Information Handbook lists the National Electrical Code, 2020 edition, as required for all of its examinations.

Does North Carolina use the 2023 NEC?

Not yet. The 2023 North Carolina Electrical Code has been adopted but its status is published as an indefinite delay, so the 2020 code remains the current one.

Will the exam move to the 2026 NEC?

North Carolina has not adopted the 2026 National Electrical Code. The examination follows the code the state enforces, so nothing changes on the paper until the state moves.

Which NFPA 72 edition is allowed?

The 2013 edition, and only for the Limited, Intermediate, Unlimited, SP-SFD and SP-FA/LV examinations.

My study material cites Article 120 for load calculations. What is that?

Article 120 is where the 2026 book puts branch circuit, feeder and service load calculations. In the 2023 edition that material is Article 220. Find it by subject in your 2020 book rather than by number.

Can I study from a 2026 code book?

You can learn the methods from one, but you cannot take it in. The reference list requires the 2020 edition, and the section numbers differ, so studying from a book you will not carry costs you lookup speed on the day.

What this page cites

• NCBEEC Examination Information Handbook The Board's own candidate handbook. Source for the item counts, the time limits, the reference list, the marking rules, the identification rules and the retake wait. Read 5 September 2026. source
• Office of State Fire Marshal, state electrical code and interpretations The page that marks the 2020 North Carolina Electrical Code as the current code effective 1 November 2021 and the 2023 code as an indefinite delay. Read 5 September 2026. source
• NEC 2026 renumbering, article by article Our own record of the article and section numbers that changed address between the 2023 and 2026 editions, each one read in the 2026 text before it went on the list. source
• NCBEEC examinations page The Board's page on the qualifying examination: open book, the minimum grade of 70, the seven test center cities and the 90 day wait after a failure. Read 5 September 2026. source
• Office of State Fire Marshal, codes current and past The list of North Carolina codes with their effective dates, including the 2020 electrical code and the building codes beside it. Read 5 September 2026. source