California Electrician PrepCertification, exam and code, in one place

Checked against primary sources 2026-09-05

The edition question, settled

Which NEC Edition Is on the California Exam: 2023 NEC

The exam hands you NFPA 70, the 2023 edition, inside the testing system. The 2025 California Electrical Code is built on the same 2023 model code, so for once the exam and the field agree on the year. Here's what differs in the 2026 book, with both numbers.

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On this page
  1. The answer: the 2023 edition, supplied on screen
  2. The model code, not the California Electrical Code
  3. The unusual part: the field is on the same model code
  4. What carries a different number in the 2026 book
  5. Two article level changes that matter to the specialty exams
  6. What didn't move
  7. When the exam edition would move
  8. Questions people ask
  9. What this page cites

The answer: the 2023 edition, supplied on screen

The Candidate Information Bulletin lists what every candidate is given inside the testing system, and the National Electrical Code on that list is the 2023 Edition.

It comes with NFPA 70E, Standard for Electrical Safety in the Workplace, 2024 Edition and the Cal/OSHA Pocket Guide for the Construction Industry, updated 2022. Three of the five exams add a further reference on top.

You may not bring or use your own reference materials, so the edition question isn't about what you buy. It's about what the questions were written against. Book rules covers the rest.

The model code, not the California Electrical Code

Worth being precise here, because two documents get mixed up. NFPA publishes the National Electrical Code. California publishes the California Electrical Code as Title 24 Part 3, which is the model code with California's changes on top.

The book on the exam screen is NFPA 70 itself. So the questions turn on the model code rather than on California's amendment layer, and studying a state amendment list won't earn you a mark. State amendments explains what that layer is and where it does matter.

The unusual part: the field is on the same model code

The 2025 California Electrical Code took effect January 1, 2026 and is built on the 2023 NEC. The Building Standards Commission's statement of reasons for the Part 3 rulemaking says it proposed to adopt the most recent edition of the model code, the 2023 NEC.

So a candidate studying for this exam and an electrician reading the code on a job in California are working from the same model year right now. That isn't always true, and it's the one thing that makes California's edition question simple.

What carries a different number in the 2026 book

Study material written for the 2026 edition points at numbers that don't exist in the book on your screen. These are the moves we hold a record for, each with both numbers.

Our crosswalk records a few more at section level: 120.13 in the 2026 book (220.12 in the 2023 edition this exam uses), 120.6 (220.60), 120.82 and 120.83 (220.82 and 220.83), 312.8(A) and 312.8(C) (312.5(A) and 312.5(C)), and 312.11 (312.8).

Two article level changes that matter to the specialty exams

The crosswalk records Article 770 as gone in the 2026 edition, with the cables themselves in Article 722, and the old Chapter 8 communications material moving into the Chapter 7 limited energy articles. The Voice Data Video hours rule in CCR Title 8 section 291.1 names Articles 725, 770, 800, 810 and 820, and all five read straight in the 2023 book on your screen.

It also records Article 235 as gone from the 2026 book, with the branch circuit, feeder and service material for systems over 1000 volts spread across Articles 265 through 268 and grounding and bonding at 270. Again, that's a 2026 problem, not a 2023 one.

Article 760, the fire alarm article the Fire/Life Safety hours rule points at, keeps its number in both editions. We checked that in the 2026 text.

What didn't move

Most of the book came through both editions untouched, which is the part nobody says out loud. Ampacity is still Article 310 and Table 310.16 is still Table 310.16. Overcurrent is still Article 240. Grounding and bonding is still Article 250. Boxes are still Article 314 and box fill is still 314.16. Motors are still Article 430. Chapter 9 is still the tables.

So a 2026 study set is wrong about a handful of addresses and right about nearly everything else. The practice hub names the sets where the difference shows up.

When the exam edition would move

California's 2027 Triennial Code Adoption Cycle will adopt the 2026 edition of the NEC, and that work becomes the 2028 edition of the California Building Standards Code, effective January 1, 2029. Milestone dates on that page are listed as to be determined.

The exam's edition is set by the bulletin rather than by the code cycle, so watch the bulletin for the change and treat the code cycle as the earliest sensible signal. The next edition page tracks it.

Questions people ask

Which NEC edition does the California electrician exam use?

The 2023 edition, supplied inside the testing system. NFPA 70E 2024 and the Cal/OSHA Pocket Guide for the Construction Industry updated 2022 come with it.

Is the exam on the California Electrical Code or the NEC?

The book on screen is NFPA 70, the National Electrical Code itself. The California Electrical Code is Title 24 Part 3, the model code plus California's changes, and it isn't what the bulletin lists.

Is California on the 2023 NEC?

In the field, yes in effect. The 2025 California Electrical Code took effect January 1, 2026 and is built on the 2023 NEC, per the Building Standards Commission's own statement of reasons for the Part 3 rulemaking.

Do 2026 NEC study materials still work?

Mostly, with a short list of exceptions. Load calculations, energy management, transformer overcurrent, physical damage, wire bending space and one grounding subsection carry different numbers, and this page gives both numbers for each.

When will the California exam move to the 2026 NEC?

No date is published. The 2027 Triennial Code Adoption Cycle will adopt the 2026 NEC into the 2028 California Building Standards Code, effective January 1, 2029, with milestone dates still to be determined. The exam follows its bulletin, not the code cycle.

Does Article 760 change between the two editions?

Not in number. Article 760 is the fire alarm article in both the 2023 and 2026 editions, which we checked in the 2026 text. Article 770 is the one in that neighborhood our crosswalk records as gone in 2026.

Put it to the test

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What this page cites

If your book is the other edition

The 2023 to 2026 section crosswalk maps every section that moved, both directions, $29 once.

Built and maintained by Jeff Clerisier, Trojan Digital Marketing.

Every rule here is cited to the section it comes from, and corrections are logged in public with the date. This is study material rather than electrical advice, and it does not replace your own code book or your inspector.

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