Arizona C-11 Electrical Contractor Exam Prep

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Arizona C-11 Electrical Contractor exam at a glance

The Arizona C-11 Electrical Contractor exam has 110 questions and a time limit of 4 hours. That works out to about 2.2 minutes per question. Figures are from the official candidate bulletin, checked October 8, 2026.

Questions110
Time4 hours

Confirm question count, time, open-book rules, and passing score on the live board bulletin before you sit. We do not guarantee a passing result. Source: PSI AZ C-11 (CR-11) L-11.pdf, revised 6/8/23, checked October 8, 2026. How we source exam facts

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What’s included

19,000+ word study guide

Worked calculations, code-section breakdowns, exam traps, a key-terms glossary and a 30/60/90-day plan.

4 full-length practice exams

Original questions weighted to match the topic mix of the real exam.

440 practice questions

Every one with a written explanation and the code section behind the answer.

Same study guide and four exams on every term. You are choosing how long you can log in.

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What this prep covers

  1. About the Arizona C-11 Electrical license
  2. How Arizona licensing works
  3. Electrical theory and formulas the exam assumes
  4. How the NEC is organized (navigate it fast)
  5. Branch circuits, feeders, and load calculations (Article 220)
  6. Conductor ampacity and sizing (Article 310)
  7. Overcurrent protection (Article 240)
  8. Grounding and bonding (Article 250)
  9. Boxes, raceways, and wiring methods (Articles 300, 314, Chapter 9)
  10. Motors, transformers, and HVAC (Articles 430, 450, 440)
  11. Services and working clearances (Articles 230, 110, 408)
  12. GFCI, AFCI, and special locations
  13. Worked calculations
  14. Sample exam questions, solved
  15. Common mistakes and exam traps
  16. Key articles to tab
  17. Glossary of must-know terms
  18. Your 30 / 60 / 90 day study plan
  19. Exam-day strategy
  20. 2 — Scope of the NEC
  21. 7 — Examination of Equipment for Safety

Arizona C-11 Electrical Contractor licensing, explained

About the Arizona C-11 Electrical license

Arizona licenses electrical contracting through the Arizona Registrar of Contractors (ROC) — this is a contractor license held by a business, not a personal journeyman or master electrician card. Arizona does not issue a statewide journeyman or master electrician license at all. Instead, C-11 (commercial), R-11 (residential), and CR-11 (dual) are parallel classifications distinguished by the scope of work they cover, not by seniority — C-11 is not a "master" tier you graduate into from R-11. To obtain any of them, an individual called the qualifying party must document at least four years of hands-on and/or supervisory trade experience and pass the required exams; that person's experience and exam results are then tied to the specific business license. If the qualifying party leaves the business, the ROC generally allows a limited window to name a replacement qualifying party before the license goes inactive.

The trade exam is National Electrical Code (NEC) based. Arizona has no single statewide building/electrical code — individual cities and counties adopt and enforce their own NEC edition — but the ROC/PSI trade exam itself is written against one specific NEC edition, the code book for this paper is the 2017 National Electrical Code, even when a city has adopted a later edition for permits. The exam is open book: you may bring a clean copy of the specified NEC edition. Per PSI's testing rules, tabs must be permanent (the kind that would tear the page if removed) — sticky notes, flags, and other removable tabs are not allowed, and loose or handwritten notes are not allowed. Plan to tab and index your code book before test day, because the exam is as much a test of how fast you can locate a section as it is of what you have memorized.

Know these scope facts cold, because the exam asks them in plain-language form: the license is issued to the contracting business, with the qualifying party's experience and exam results attached to it — it is not a personal trade card you carry between employers; most installations require a permit and inspection before concealment (rough-in) and again at final; you must work within the classification you hold (commercial C-11 vs. residential R-11 vs. dual CR-11); and performing electrical contracting without the required license, or beyond your licensed scope, is a violation that can cost the license and carry civil penalties.

How Arizona licensing works

  • Experience: at least 4 years of documented hands-on and/or supervisory trade experience, credited to the qualifying party who sits for the exams. Because Arizona has no separate journeyman card, this experience is verified directly by the ROC (through references and affidavits), not through a prior state license.
  • Education: approved trade-school or apprenticeship instruction can count toward part of the 4-year experience requirement, but it does not substitute for either required exam.
  • Application: the qualifying party submits the application, fees, and experience verification on behalf of the license entity (the contracting business) before being approved to sit for the exams.
  • Exams: two are required — the online Statutes and Rules Exam (SRE) covering Arizona contracting law, and the C-11 trade exam (110 questions, 240 minutes, open book, administered by PSI) — or the NASCLA Accredited Examination for Electrical Contractors in place of the AZ trade exam. Both ROC exams pass at 70 percent; the NASCLA alternative passes at 75 percent. That count, that time, and that cut score are the figures printed on L-11.pdf, revised June 8, 2023. The NASCLA electrical examination is a different paper.
  • Bonding: a contractor's license bond sized to your projected gross annual volume must be on file before the license issues — commonly $2,500 up to $150,000 in volume, stepping up to $50,000 for volume over $10 million. Confirm current amounts with the ROC.
  • Renewal: licenses renew on a fixed 2-year cycle. Most ROC classifications have no continuing-education requirement, but electrical (C-11/R-11/CR-11) is an exception: 16 hours of continuing education every 2 years, with at least 8 hours on technical subjects.

Before you rely on any value in this guide, use the 2017 NEC for code values on this paper. Ampacities, GFCI and AFCI scope, and working-clearance distances change between editions. A city may enforce a different edition on a permit. This examination uses the 2017 book named on the outline.

This is the opening of the full study guide. The complete guide continues into code navigation, worked calculations and solved exam questions.

Common questions about this exam

How many questions are on the Arizona C-11 Electrical Contractor exam?

The Arizona C-11 Electrical Contractor exam has 110 questions and a time limit of 4 hours, about 2.2 minutes per question. Check the current board bulletin before you book.

How much practice does this prep include?

It includes 4 full-length practice exams and 440 practice questions in total. Every question has a written explanation naming the code section the answer comes from.

How long is the study guide?

The Arizona C-11 Electrical Contractor guide runs to roughly 19,017 words in 21 sections, starting with “About the Arizona C-11 Electrical license” and ending with “7 — Examination of Equipment for Safety”.

How long do I get access?

Choose 30, 60 or 90 days at checkout. Your days do not start at checkout: they begin the first time you open the course (or 14 days after purchase, whichever comes first). Access works on any device, and you can retake every practice exam as often as you like. Days remaining are shown in your dashboard and you can extend at any time.

Is this an official Arizona C-11 Electrical Contractor exam?

No. This is independent preparation material. It is not affiliated with or endorsed by any state licensing board or exam vendor, and it does not contain real exam questions. Always confirm current requirements with your licensing board.

About this prep

This prep is built specifically for the Arizona C-11 Electrical Contractor examination and includes a 19,000+-word study guide written for this exam, 4 full-length practice exams and 440 practice questions, each with a written explanation.

How access works

You are paying for access length (30, 60, or 90 days). The study guide and four timed exams are the same on every term. Your days start the first time you open the course, not at checkout (or 14 days after purchase, whichever comes first), and access works on any device for that term.

Not affiliated with or endorsed by any state licensing board or exam vendor. For exam-preparation purposes only.