What's on the Arizona C-11 Electrical Exam? The PSI Outline
PSI's outline for the Arizona C-11 (CR-11) commercial electrical trade exam: 110 questions across 15 areas on the 2017 NEC, with photovoltaics and fire alarm systems, and how to study for it.
What's on the Arizona C-11 Electrical Exam?
The Arizona C-11 (CR-11) trade exam has 110 scored questions, and you need 70% to pass. It is open book on the 2017 NEC, with NFPA 72 (2016) and OSHA's construction standards also on the list. The counts below are from PSI's C-11 outline, last revised June 8, 2023.
The outline
| Content area | Questions |
|---|---|
| Service, Feeders and Branch Circuits | 13 |
| Grounding and Bonding | 13 |
| Special Occupancies and Equipment | 13 |
| Conductors and Cables | 12 |
| Raceways and Boxes | 10 |
| Photovoltaics | 10 |
| Overcurrent Protection | 8 |
| General Electrical Knowledge | 5 |
| Motors | 5 |
| Low Voltage | 5 |
| Fire Detection and Alarm Systems | 5 |
| Safety | 5 |
| Lighting | 3 |
| Electrical Devices | 2 |
| Illuminated Signs | 1 |
| Total | 110 |
Where each area lives in the 2017 NEC
PSI does not map its areas to NEC articles. This is where you will find the rules for each one.
- Service, Feeders and Branch Circuits: Articles 210, 215, 220, 225 and 230.
- Grounding and Bonding: Article 250.
- Special Occupancies and Equipment: Chapters 5 and 6 (hazardous locations, health care, pools, generators) and Article 700.
- Conductors and Cables: Article 310 and the cable articles (320 through 340).
- Raceways and Boxes: Articles 300, 312, 314 and the raceway articles.
- Photovoltaics: Articles 690 and 705.
- Overcurrent Protection: Article 240.
- Motors: Articles 430 and 440.
- Low Voltage: Articles 725 and Chapter 8.
- Fire Detection and Alarm Systems: Article 760 and NFPA 72 (2016).
- Safety: 29 CFR 1926, Subpart K for electrical work.
- Lighting, Devices and Signs: Articles 410, 404 and 406, and 600.
How to study
- Learn the 2017 numbering. Most newer material is written for the 2020 or 2023 NEC, which moved several rules; the ampacity table, for one, is Table 310.15(B)(16) in 2017.
- Don't skip photovoltaics. Ten questions on Article 690 is more than most states ask; it reflects Arizona's solar market.
- Tab your books before test day. Permanent tabs are allowed, but you cannot write in your books during the exam.
- Pace yourself. 110 questions in 4 hours is about 2 minutes each, and PSI's unscored questions use the same clock.
Practice for the exam
Our Arizona C-11 practice test draws from all 15 areas in the same proportions, and every explanation cites the 2017 NEC section. For test-day logistics, see the C-11 exam day.
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