ICC Practice Test

This page is for installers and contractors preparing to work under Illinois Commerce Commission (ICC) certification for distributed generation or EV charging stations. It explains what the ICC asks for, including the $50 application fee and the April 1 recertification date, and gives you free practice sets on regulations, electrical safety, ethics and project documentation.

ICC Exam at a Glance

What the ICC is and how it works

According to Illinois Commerce Commission (ICC). It certifies distributed generation (DG) and EV charging station installers under Se, “"Qualified person" means a person who performs installations on behalf of the certificate holder and who has either satisfactorily completed at least five installations of a specific distributed generation technology or has completed at least one of the following programs requiring lab or field work”^[5]

The Illinois Commerce Commission (ICC) certifies distributed generation (DG) installers and EV charging station installers. Despite the exam-style name, the facts we have verified describe a written application, not a test. A DG application is filed with the ICC Chief Clerk and verified by a corporate officer. The application fee is $50 for both DG and EV charging station certification, and the DG fee is nonrefundable.

Eligibility turns on having a qualified person who performs installations on behalf of the certificate holder. For DG, a qualified person has either completed at least 5 installations of a specific DG technology, or holds a DOL apprenticeship, a NABCEP, UL or ETA certification, or an ICCB AAS degree. For EV charging, a qualified person has completed at least 5 EV charger installations, or holds a DOL journeyman apprenticeship or a UL EV charging certification.

A DG certificate stays valid while the holder is in good standing, and the holder must submit a recertification report every year by April 1. A holder who does not submit it within 30 days after April 1 is subject to suspension or revocation. Because there is no exam in these facts, we list no score, time limit or retake rule. Forms and requirements can change, so confirm them with the ICC before you file.

Worked examples: how to reason through ICC questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: What is a key process for managing changes in a project?

1. Disregarding stakeholder feedback during changes
2. Adjusting project scopes without documentation
3. Implementing change management processes
4. Ignoring changes to adhere to the original plan

Answer: C. Implementing change management processes

Explanation:

Implementing change management processes is correct because a change to scope, budget or schedule needs a record, a decision and a way to tell the people affected. That keeps a job from drifting without anyone noticing.

Disregarding stakeholder feedback is wrong because the people paying for or affected by the work need a say in changes. Adjusting scope without documentation is wrong because nobody can later show what was agreed, which invites disputes. Ignoring changes to stick to the original plan is wrong because real conditions on site do shift, and a plan that never adapts fails.

Rule to remember: every change is requested, reviewed, approved and written down before the work changes.

Example 2

Question: What color is the grounding conductor in a standard U.S. electrical system?

1. White
2. Black
3. Red
4. Green or bare copper

Answer: D. Green or bare copper

Explanation:

Green insulation or bare copper marks the grounding conductor. The color tells anyone opening a panel or box which wire is a safety path and which wires carry current.

White is wrong because it normally identifies the neutral conductor, which carries current in normal operation. Black is wrong because it is a common color for ungrounded, energized conductors. Red is wrong for the same reason: it is another color used for energized conductors, so treating it as a ground could be dangerous.

Rule to remember: color coding is a safety signal. Green or bare means ground, white means neutral, and other colors are treated as live until tested.

Example 3

Question: What is the first recommended step when an ICC contractor and a client have a payment dispute?

1. File a lawsuit immediately
2. Attempt to resolve the dispute through direct negotiation or mediation
3. Stop all work and abandon the project
4. Report the client to the ICC

Answer: B. Attempt to resolve the dispute through direct negotiation or mediation

Explanation:

Trying direct negotiation or mediation first is correct because it is usually the fastest and cheapest way to settle a payment disagreement, and it keeps the working relationship and the written record intact.

Filing a lawsuit immediately is wrong because it skips cheaper steps and escalates cost and time. Stopping all work and abandoning the project is wrong because it can put the contractor in breach and create new liability. Reporting the client to the ICC is wrong as a first step because it does not resolve a payment dispute between the two parties.

Rule to remember: talk first, document everything, and escalate only when informal resolution fails.

How to use these practice tests

Start with the official material. Read the ICC rules and application instructions for your certification type so you know what the Commission actually requires: who counts as a qualified person, what the application must include and when recertification is due. Note anything you are unsure about and check it on the ICC site rather than relying on a practice question.

Then work through the practice sets by topic. Begin with Contractor Licensing Requirements and Regulations and Compliance. Move to Electrical Systems and Safety and Construction Practices for the field side of the work. Finish with Project Management and Documentation and Consumer Protection and Dispute Resolution.

After each set, reread every question you missed and write the rule in your own words. Retake the weak sets after a break, then try the mixed practice test. Our questions are written by us and are not real exam questions, so use them to check your understanding, not to predict anything.

Sources & last verified

1. ilga.gov — exam fee (official source). “1) Application for certification $50” Verified Oct 22, 2026.
2. Illinois Commerce Commission (ICC). It certifies distributed generation (DG) and EV charging station installers under Se — exam fee, eligibility (official source). “Include the $50 application fee with the certification application. The application fee may be paid by certified check, cashier's check or money order made payable…” Verified Oct 22, 2026.
3. ilga.gov — validity, renewal, late registration deadline (official source). “a) A certificate holder shall recertify annually to remain in good standing with the Commission.” Verified Oct 22, 2026.
4. ilga.gov — delivery (official source). “d) Applications for certification under this Part shall be filed with the Chief Clerk of the Commission and shall be verified by a corporate officer…” Verified Oct 22, 2026.
5. ilga.gov — eligibility (official source). “"Qualified person" means a person who performs installations on behalf of the certificate holder and who has either satisfactorily completed at least five installations of…” Verified Oct 22, 2026.

How we verify: editorial & fact-checking policy. Report an error: contact us.