Licensing Exams by Trade Name

Missouri
NASCLA-Accredited Journeyman Electricans

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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
OPEN  BOOK
Exam Content
Subject Areas# of
Questions
Interpreting Plans & Specifications6
Basic Electrical Safety8
Electrical Theory & Principles10
Testing & Troubleshooting7
General Code Requirements15
Wiring & Protection18
Wiring Methods & Materials16
Equipment for General Use10
Special Occupancies & Special Equipment8
Special Conditions & Communication Systems2
Total number of test questions:
100
Time allowed (minutes):
270
Books Allowed in the Exam
1.
National Electrical Code (NFPA-70) [or] The National Electrical Code Handbook, 2017 or 2020, NFPA
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2.
CFR Title 29, Part 1926 Selections (OSHA), 2013, PSI
Buy from PSI
3.
Electricity One — Seven, 1999, Harry Mileaf
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4.
International Residential Code for One- and Two-Family Dwellings, 2015, ICC
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5.
NFPA 101: Life Safety Code, 2015, NFPA
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6.
NFPA 70E: Standard for Electrical Safety in the Workplace, 2015, NFPA
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7.
NFPA 72: National Fire Alarm and Signaling Code, 2016, NFPA
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8.
Ugly's Electrical References, 2017, Jones & Bartlett Learning
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QUESTION:  "What is the difference between the National Electrical Code (NEC) and the Handbook version?".  As far as the actual NEC code quoted in the text... it's the same.

The NEC Handbook has additional diagrams, graphics and explanations inserted into the text (adding more pages and raising the price).  It was designed for engineers and inspectors.  The typical exam candidate should not use it as a preferred reference.

Additional Recommended Books

The books listed below may be allowed at the exam location as long as they have the original binding and no written notes.  Read your exam bulletin or "what to bring" statement carefully for specific restrictions.

1a.
Ferm's Fast Finder Index, 2020, IAEI
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1b.
Tom Henry's Key Word Index, 2020, Tom Henry
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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.

2.
Practical Calculations for Electricians, 2020, Ray Holder
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Available Study Materials
This study guide only covers the OSHA portion of the PSI exam.
PSI OSHA Selections, 2013
Study Guide
$49.95
We advise that you NOT purchase the PSI published book shown in the exam bulletin.  We recommend a better, up-to-date allternative on our Study Guides purchase page linked below.

The button below will take you to the details about our 800 question Study Guides and provide you with a FREE "Reference Navigator" document that allows you to more accutately decide which sections of the federal code applies to your exam.  PSI does not provide this information.
Go to OSHA Guide buy page
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