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Checked against primary sources 2026-09-07

Code IB

Minnesota Class B Installer License: The Open Class B

Two Minnesota licenses carry the words Class B and both were closed in 1985. This one was not. Class B installer is a live credential with a 25 question exam, and it is almost certainly the one the examination guide means when it mentions a Class B paper.

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On this page
  1. The Class B that is still open
  2. What it asks for
  3. The $1,000 bond
  4. The 25 question paper
  5. Fees and renewal
  6. What is not published
  7. Questions people ask
  8. What this page cites

The Class B that is still open

The fee schedule settles this. Class B master and Class B journeyworker carry NA in the exam column, and Class B journeyworker carries NA in the new column as well. Installer B, code IB, carries a $50 exam fee and a $48 new total.

So of the three credentials with a B in the name, one takes applications. Read what closed and when if you were searching for the other two.

What it asks for

Minnesota Statutes 326B.33, subdivision 5 gives an installer applicant two ways in: a post high school course in electricity approved by the commissioner, or at least one year of experience.

The DLI matrix reads 12 months in total. Wiring for and installing has no minimum and caps at 12, maintaining and repairing caps at 6, and line work, installing elevators and technology circuits cap at 3 each.

Twelve months is the shortest experience requirement on the electrical side of the Minnesota ladder.

The $1,000 bond

326B.33, subdivision 6 says every Class A and Class B installer, as a condition of licensure, shall give bond to the state in the penal sum of $1,000. That is a personal bond and it is separate from the $25,000 contractor bond.

DLI publishes the form as the Installer B personal bond on its licensing forms page.

The 25 question paper

The Licensing Examination Guide says the license examinations for the Class B and satellite system installer licenses consist of 25 questions. It does not say which Class B credential it means.

The reading that fits the fee schedule is this one, because Class B master and Class B journeyworker have no exam fee to pay. We flag it as an inference rather than a statement, because the guide does not spell it out.

The time allowed is five and a half hours and the pass mark is 70 percent, the same as the 80 question master paper. Twenty five questions across five and a half hours is the most generous time per question in the whole Minnesota set.

Fees and renewal

Fifty dollars for the examination application. Forty for the license plus $8 board, so $48 new. Renewal adds the $5 continuing education fee and comes to $53, or $73 with the $20 late fee.

Continuing education is 16 hours split 12 code and 4 non code, the same split as the electrician licenses. Minnesota Rules 3800.3602 names Class B installer in the list of licenses that carry the 16 hour requirement.

What is not published

The Board of Electricity publishes quarterly active license counts, and Class B installer is not one of the rows. There is no published figure for how many people hold this license and no published pass rate for its examination.

DLI's experience requirements page also still prints a Class A Installer row at 12 months, even though the statute closed that class on December 1, 2007 and the fee schedule has no row for it. Treat the class as closed and the page as stale.

Questions people ask

Is the Minnesota Class B license still available?

Class B installer, code IB, is. Class B master electrician and Class B journeyworker electrician were both closed to new applicants on August 1, 1985 and cannot be obtained now.

What does a Class B installer do?

Minnesota Statutes 326B.33, subdivision 5 covers the entry route rather than the scope, asking for a post high school course in electricity approved by the commissioner or at least one year of experience. The DLI matrix credits 12 months in total, weighted toward wiring for and installing.

How many questions is the Class B installer exam?

Twenty five. The guide words it as the license examinations for the Class B and satellite system installer licenses, without saying which Class B credential is meant, and the fee schedule points at this one.

Does a Class B installer need a bond?

Yes, $1,000. Minnesota Statutes 326B.33, subdivision 6 requires every Class A and Class B installer to give bond to the state in that penal sum, and DLI publishes the Installer B personal bond form.

What is the Class A installer license?

A closed class. Minnesota Statutes 326B.33, subdivision 3 says no new Class A installer licenses shall be issued as of December 1, 2007. DLI's experience page still prints a row for it, which does not reopen the class.

How much continuing education does a Class B installer need?

Sixteen hours per renewal period, with at least 12 on the National Electrical Code and 4 on the statutes and rules. Minnesota Rules 3800.3602 names the license in its 16 hour list.

Put it to the test

Thirty free questions, timed, with the working shown

Every miss comes back with the arithmetic worked out and the code section named, so you learn the trap and not just the answer. No account.

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All questions here are original. They are not actual exam questions, and no question bank can promise you a pass.

What this page cites

If your notes still say 2023

The 2023 to 2026 section crosswalk maps every section that moved, both directions, $29 once.

NEC and National Electrical Code are registered trademarks of the National Fire Protection Association.

Trojan Digital Marketing is an independent company. We are not affiliated with, endorsed by, or sponsored by NFPA, the Minnesota Department of Labor and Industry, the Department of Labor and Industry, or any licensing authority, school or union.

The Minnesota examinations are open book on a book the department hands you. DLI provides the National Electrical Code in soft cover with no tabs or other aids, allows a laws and rules booklet and a basic calculator, and allows no other materials or electronic devices in the building. The questions follow the 2026 edition from 8 September 2026, and 17 August 2026 is the permit date rather than the exam date.

All practice questions are original. They are not actual exam questions.

Built and maintained by Jeff Clerisier, Trojan Digital Marketing.

Every rule here is cited to the section it comes from, and corrections are logged in public with the date. This is study material rather than electrical advice, and it does not replace your own code book or your inspector.

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