CO-ME Certification

What Is the CO-ME Certification?

The Colorado Master Electrician License Exam, commonly shortened to CO-ME, is the credentialing test that stands between a licensed Colorado journeyman electrician and independent authority to plan, lay out, and supervise electrical installations at the master level. It is not a training course or a voluntary badge - it is a state-regulated exam tied directly to a legal license issued by the Colorado State Electrical Board, part of the Colorado Department of Regulatory Agencies (DORA).

Because the exam sits at the intersection of code knowledge, field experience, and Colorado's specific administrative rules, candidates often underestimate how much of the preparation is procedural rather than purely technical. Understanding the mechanics of the exam - who runs it, how it's scored, what references are allowed - is just as important as knowing NEC Article 250. For a broader orientation to the credential itself, see What Is CO-ME? and the closely related CO-ME Meaning breakdown.

Who Administers the Exam and Application

Two separate organizations handle two separate parts of becoming a Colorado master electrician. The Colorado State Electrical Board, operating under DORA, sets the licensing rules, verifies experience and education documentation, and issues the actual license. The exam itself, however, is delivered through PSI Services LLC, the third-party testing vendor that runs the computer-based test at approved centers.

This split matters practically: your exam registration, fee payment, and scheduling all go through PSI, while your license application, employer/master experience verification, and education transcripts go to DORA. Candidates who mix these up often delay their own licensing timeline by weeks. If you're mapping out the full sequence of forms and deadlines, the CO-ME Requirements 2026 guide lays out each step in order.

Exam Format, Timing, and Scoring

The CO-ME exam is a computer-based, multiple-choice test. The scored portion consists of 90 questions administered over 240 minutes. PSI also includes up to 10 unscored pretest questions, for which candidates receive an additional 30 minutes - meaning the total seat time can extend beyond the core four hours, but only the 90-question core determines your result.

Passing requires answering 70% correctly, which works out to 63 of the 90 scored questions. Colorado does not require candidates to pass each content domain separately - a strength in one domain can offset a weaker showing in another, as long as the overall score clears the 63-question threshold. This is a meaningfully different scoring philosophy than exams that impose domain-by-domain cutoffs, and it changes how you should allocate study time (more on that below).

For a deeper look at how this scoring model compares to what candidates expect walking in, see CO-ME Passing Score 2026: Exactly What You Need to Pass.

Domain Breakdown and Question Weighting

The CO-ME exam covers 13 domains, and the official scored-item allocation is published by PSI. Knowing this weighting is the single highest-leverage piece of information for building a study plan, because it tells you exactly how many points are available in each area.

Grounding and Bonding is the single largest domain at 14 questions - over 15% of the entire scored exam by itself. Services, Feeders, and Branch Circuits is next at 11. Together, these two domains plus Special Occupancies, Special Equipment, and Electrical Calculations (9 questions each) account for more than half of the exam. A candidate who masters those five domains has a mathematical head start that no amount of polish on low-weight domains like Special Conditions (2 questions) can match.

For a full walkthrough of all 13 domains with subtopics and study priorities, see the CO-ME Exam Domains 2026: Complete Guide to All 13 Content Areas. If you're still trying to gauge whether this exam matches your current comfort level with code work, How Hard Is the CO-ME Exam? Complete Difficulty Guide 2026 is worth reading before you register.

Eligibility Pathways to Sit for the Exam

Colorado offers more than one road to exam eligibility, which matters because your documentation burden differs depending on which path you take.

• Experience-based route: 10,000 hours of qualifying electrical work over at least five years, including planning, layout, and supervisory experience that goes beyond standard journeyman-level duties. This experience must be verified by an employer or supervising master electrician.
• Education-based route: Qualifying electrical-engineering graduates, along with graduates of approved trade schools or community-college electrical programs, may qualify through transcripts rather than the full experience-hour count, subject to DORA's review.

Whichever path applies to you, the required verification and transcript documents go to DORA - not PSI - and should be prepared well before you schedule your exam date, since delays in documentation review can push back your ability to actually apply for the license even after you've passed. The full mechanics of each pathway, including what documentation each requires, are covered in CO-ME Requirements 2026: Eligibility, Prerequisites & How to Qualify.

Reference Materials and Test-Center Rules

The exam bulletin governs which code edition applies and what you're allowed to bring into the test center - and both details change on a schedule you need to track.

The PSI bulletin updated June 18, 2026 specifies that NEC 2026 references become the applicable code edition for the exam effective August 1, 2026. Candidates testing near that transition date should confirm which edition their specific exam administration uses, since studying the wrong code year is a preventable and costly mistake.

On reference materials: the test center supplies the NEC code book and a formula/reference page as part of the testing session. Personal reference materials of any kind are prohibited. The supplied code book cannot be written in, highlighted, underlined, or tabbed/indexed in advance - you're working with a clean copy under time pressure, so familiarity with the NEC's table of contents and index structure becomes a real skill, not a formality. An onscreen calculator is provided for computational questions, particularly relevant to the Electrical Calculations and load-sizing portions of the exam.

A Domain-Weighted Study Approach

Generic study techniques - spaced repetition, timed practice blocks, active recall - all work fine for CO-ME prep, but they only pay off when applied against the actual point distribution above. A candidate who spends equal time on all 13 domains is leaving points on the table relative to one who front-loads Grounding and Bonding, Services/Feeders/Branch Circuits, Special Occupancies, Special Equipment, and Electrical Calculations.

A more detailed week-by-week plan, including recommended practice-question volumes, is available in the CO-ME Study Guide 2026: How to Pass on Your First Attempt. You can also run full-length, domain-weighted practice sessions on our practice test platform to see how your scoring pattern compares against the real exam's 63-of-90 threshold before test day.

After Passing: Licensing and Renewal

Passing the exam is a prerequisite for submitting your DORA license application - not a substitute for it. You still need to have satisfied the experience-based or education-based eligibility requirements, and you'll submit the required employer/master experience verification and any applicable education transcripts alongside your application.

Once licensed, active master electrician licenses in Colorado renew every three years. Renewal requires 24 continuing-education hours, with at least 4 of those hours specifically covering NEC changes, and no more than 4 hours counted from safety-related content. One notable exception: the first renewal cycle following a license issued by examination is exempt from the CE requirement. Licensees should retain their continuing-education records for seven years in case of audit.

Cost Breakdown

PSI Services LLC administers exam registration and fee collection. The initial examination fee is $78, and a retest - required if you don't clear the 63-of-90 scored-answer threshold on your first attempt - costs $73. These figures do not include DORA's separate license application costs, education/transcript fees, or any prep materials, so total out-of-pocket cost varies by candidate pathway. A full accounting of every fee a candidate is likely to encounter, from initial registration through license issuance, is broken down in CO-ME Certification Cost 2026: Complete Pricing Breakdown.

Candidates weighing whether the time and cost investment translates into career value should also review Is the CO-ME Certification Worth It? Complete ROI Analysis 2026, which looks at how the license changes what work you're legally permitted to plan and supervise in Colorado.

Frequently Asked Questions