The exam content shown below only lists main category headings. Please consult the PSI exam bulletin from the button below for more detailed information about subject sub-categories.
| Subject Areas | # of Questions |
|---|---|
| Electrical Theory | 20 |
| Wiring and Protection (100-285) | 14 |
| Wiring Methods and Materials (300-398) | 13 |
| Equipment for General Use (400-490) | 9 |
| Special Occupancies (500-590) | 8 |
| Special Equipment (600-695) | 4 |
| Special Communications (700-708) | 2 |
| Calculations | 30 |
The study materials we offer for this exam will cover the two non-NEC specific subjects (Electrical Theory and Calculations) with questions from Ugly's Electrical Reference
We highly 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.
The book above contains practical applications of the NEC such as Ohm‘s Law, series/parallel circuits, voltage drop, load calculations, motor phases, impediance, inductance and math formulas you are expected to know. The basic knowledge covered in the exam is assumed and not usually listed as subjects covered.
