Applications for licensing are managed by your local city or county government jurisdiction. Those agencies determine which ICC exam is appropriate for your license based on local code adoption. They also determine if pre-authorization is required.
To find the details of the sub-categories listed, you must use the ICC web page (from the button below) and search for your exam by choosing "Type: Contractor/Trades" and "State: National/All". Then enter the three digit exam code in the "Title" (e.g., T16). Click "Search" then "Outline".
| Content Areas | Sub- categories | % of Questions |
|---|---|---|
| General Knowledge | 2 | 6 |
| Services & Service Equipment | 4 | 11 |
| Feeders | 1 | 4 |
| Branch Circuits & Conductors | 3 | 19 |
| Wiring Methods & Materials | 3 | 26 |
| Equipment & Devices | 3 | 13 |
| Control Devices | 1 | 4 |
| Motors & Generators | 1 | 6 |
| Special Occupancies, Equipment & Conditions | 4 | 11 |
The books listed below may be allowed at the exam location as long as they have the original binding and no written notes in margins. Read your exam bulletin or online summary page and look for the "What to bring" or "What is allowed" statement for specific restrictions.
We recommend that you purchase one of the reference books above to study for your exam. Each book is a comprehensive subject index to the NEC. They provide an even faster way to look up answers in the code and are far more detailed than the index at the end of the code book.
Reference #2 above contains practical applications of the NEC such as Ohm‘s Law, series/parallel circuits, voltage drop, load calculations, motor phases, impedance, inductance and math formulas you are expected to know. “Basic Knowledge” is covered in the exam but detailed subjects are assumed and not specifically called out in the bulletin.
A "calculations" book where you can drill yourself repeatedly is always a good way to remember the most basic math procedures. Generally, you won't have time during an exam to search for these procedures in a book.
Sample exam questions are sourced from the National Electrical Code (NEC) and Ugly's References. A subject category index mapped to question numbers is included with the answer key.
Bookmarks have been added to help the user randomly jump to specific questions related to NEC Articles in the code.
Additional bonus sample calculations for Ohm's Law and Series/Parallel combination circuits are included.
The total number of questions in this package: 2,570
