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NASCLA-Accredited Electrical Contractor

Apply for the License
Missouri Professional Registration
Statewide Electrical Contractors

3605 Missouri Boulevard
Jefferson City, MO  65102
Phone: (573) 522-3280
Exam Provider
PSI Services LLC
3210 E. Tropicana
Las Vegas, NV  89121
Phone:  (855) 746-8173
Exam Type
Exam Content
Subject Areas# of
Project Design & Management8
Electrical Theory & Principles11
General Code Requirements17
Wiring & Protection17
Wiring Methods & Materials16
General Equipment Use13
Special Occupancies, Special Equipment & Special Conditions8
Communication Systems1
Total number of test questions:
Time allowed (minutes):
Books Allowed in the Exam
National Electrical Code (NFPA-70) [or] The National Electrical Code Handbook, 2017 or 2020, NFPA
Buy at Amazon
Code of Federal Regulations, 29 CFR Part 1926 (OSHA), GPO [or] (OSHA) Selections by PSI, 2013
Buy from PSI
A Guide to the Project Management Body of Knowledge (PMBOK), 2000, Project Management Institute
Book Source
ANSI / ASHRAE / IES Standard 90.1-2016, USDOE
Web Page Link
Delmar's Standard Textbook of Electricity, 6th Edition, Stephen L. Herman
Buy at Amazon
International Residential Code for One- and Two-Family Dwellings, 2015, ICC
Buy at Amazon
NASCLA Contractor's Guide, Basic 13th Edition, NASCLA
Buy at Amazon
NFPA 101: Life Safety Code, 2015, NFPA
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NFPA 70E: Standard for Electrical Safety in the Workplace, 2015, NFPA
Buy at Amazon
OSHA 3071: Job Hazard Analysis Guide, 2002, USDOL
PDF File Link
Grounding and Bonding, 2014, Soares
Buy at Amazon
Ugly's Electrical References, 2017, Jones & Bartlett Learning
Buy at Amazon
NFPA 72: National Fire Alarm and Signaling Code, 2016, NFPA
Buy on Our Site
Additional Recommended Books

The books listed below are NOT allowed at the exam location

Ferm's Fast Finder Index, 2020, IAEI
Buy at Amazon
Tom Henry's Key Word Index, 2020, Tom Henry
Buy at Amazon

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.

Available Study Materials
PSI OSHA Selections
Study Guide

Sample questions are based on the PSI publication titled “29 CFR PART 1926 Selections, as of June 2013” (highlighted in green above).

This file contains approx. 800 sample questions.

REMINDER:  PSI uses this book for many exams they offer.  Not all sections of this code will apply to your exam.

We also include a table showing the relationship between our questions and OSHA code sections.  Corrections to the original PSI publication are noted.

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