The NEC code book contains the electrical code. The NEC Handbook contains that code plus explanations and illustrations. For an exam, buy the version your testing program allows. Some exams permit the Handbook. Others allow only the code book. See the examples below.
What’s different about the Handbook?
| NEC code book | NEC Handbook |
|---|---|
| The code text and its tables, figures and annexes | The code text plus explanatory material and illustrations |
| A more compact reference for repeated lookups | More context for studying why and how a rule applies |
| Use the edition named by your exam | Must match both the edition and the permitted format |
NFPA’s NEC Handbook is a learning reference. Its commentary helps explain the code, but the commentary itself isn’t an enforceable code requirement. On a calculation question, identify the actual rule or table supporting your answer.
Examples of exam rules
Book rules depend on the state and license classification:
- South Carolina Residential Electrical: from November 1, 2026, you may use the 2020 or 2023 NEC or NEC Handbook (only the 2023 after July 1, 2027).
- Nevada C-2 contractor: you may use the 2017 NEC or NEC Handbook.
- North Carolina: bring the 2020 NEC code book. The NEC Handbook is not permitted.
- Hawaii electrician: examination references are supplied at the test. Practice without relying on your own notes and tabs.
Use the allowed-reference section of your exam bulletin when packing your books. A recommended study book is not necessarily allowed in the exam room.
Get the books and practice you need for exam day
Learn to find answers in the code book, work through calculations and practice for test day.
Live classes teach the 2020 NEC. Check your state’s exam requirements before choosing a course. NC prep includes NC business and law. For another state, also study any business-and-law material required for your license. Need a code book? JCR carries the 2020 NEC softbound book.
Which should you buy to study?
Buy the permitted exam book first. Use that exact edition and format for timed practice.
A Handbook can be useful when a rule is hard to visualize or you want more context. But if you practice only in the Handbook and test with the code book, page locations and surrounding explanations will be different. Spend your timed practice sessions in the exam-day reference.
For a complete state-specific shopping list, see which books to buy for your electrical exam.
Check five things before test day
- The exact title and NEC edition.
- Whether the Handbook is explicitly permitted.
- Whether you bring the book or the testing center provides it.
- Rules for binding, notes, highlighting and permanent tabs.
- Any reference changes effective before your appointment.
Save a current copy of the bulletin. If a book rule is unclear, ask the licensing board or testing provider about the specific title. Don’t rely on what another candidate was allowed to bring last year.
Book questions students ask
Is a newer Handbook better for my exam?
Use the edition your exam permits. A newer Handbook can explain requirements that do not apply to the edition used on your test.
Can I put permanent tabs in either book?
That depends on the program. Read our tab and marking guide, then check the current bulletin.
Does the state’s adopted NEC decide the exam book?
Not necessarily. See adopted code versus exam code. Licensing examinations can change editions on a different schedule.
References checked October 25, 2026. Confirm the current bulletin for your exam date.
