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(IB) Class B Installer Electrician

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Minnesota DOLI
Electrical Contractor Licensing

443 Lafayette Road North
St. Paul, MN  55155
Phone: (651) 284-5034

Exam Type


Exam Content

The two buttons below give you access to the exam bulletin published by Minnesota DOLI and the table we have built to relate knowledge areas in the bulletin to NEC code section numbers:

Subject Areas
100‑110General Requirements
200‑215Wiring and Protection
240Overcurrent Protection
250Grounding and Bonding
300‑358Wiring Methods and Materials
400‑408Electrical Equipment
430‑440Motors, Motor Circuits and Controllers, Air-Conditioning
590Temporary Installations: GFCI Protection for Personnel
675Electrically Driven or Controlled Irrigation Machines
Chapter 9Tables
N/AApplied Electrical Theory, Electrical Systems and Equipment
Total number of test questions:
Time allowed (hours):

Books Allowed in the Exam

National Electrical Code (NFPA-70), 2017, NFPA
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Additional Recommended Books

Ferm‘s Fast Finder Index, 2017, IAEI
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Tom Henry‘s Key Word Index, 2017, Tom Henry
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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.

Ugly‘s Electrical References, 2017, George Hart (also obtained at most Lowe‘s Home Centers)
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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.

Available Study Materials
Minnesota Electrical
Practice Exam Package
$34.95 - $224.95

The price of study materials is based on the number of questions contained in the files you receive.

Questions are sourced from the NEC and Ugly's Reference.  The content is adjusted for subjects listed in the Minnesota DOLI Knowledge table.  The Master exam package (highest priced) contains 2,138 sample questions.

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