CO-JE logo
Focused certification exam prep
Start practice

What Is CO-JE Certification?

TL;DR
  • The credential is the Colorado Journeyman Electrician license, issued by the State Electrical Board; the PSI exam designation is Journeyman Wireman (JW).
  • The exam has 90 scored multiple-choice questions in 240 minutes, and 63 correct (70%) is passing.
  • Grounding and Bonding carries the largest published allocation: 14 of the 90 scored items.
  • You pass the exam before submitting the license application, but a passing score alone does not establish eligibility.

What the Credential Actually Is

On this site, "CO-JE" refers to one thing: the Colorado Journeyman Electrician License Exam, the examination candidates must pass on the way to a Colorado journeyman electrician license. It is a state licensing exam, not a voluntary industry certificate. In Colorado, performing electrical work as a journeyman requires holding the license, and the exam is one required step in earning it.

A journeyman electrician in Colorado is a licensed tradesperson who has completed substantial documented field experience and classroom training and who can install, alter, and repair electrical systems, typically working under the supervision structure of a master electrician or contractor. The exam exists to verify that you can apply the National Electrical Code, perform the necessary calculations, and recognize safe installation practices across the kinds of work journeymen actually do.

If you want a shorter orientation to the terminology before going deeper, our companion pages on what CO-JE is and what CO-JE stands for cover the basics. This article goes further into how the credential, the exam, and the licensing process fit together.

Who Issues It and Who Tests You

Two separate organizations are involved, and keeping them straight prevents a lot of confusion:

  • The issuer: The Colorado State Electrical Board, part of the Colorado Department of Regulatory Agencies (DORA), Division of Professions and Occupations. The Board sets eligibility rules, reviews your documented experience and education, and issues the license. Its information lives at dpo.colorado.gov/Electrical.
  • The testing provider: PSI Services LLC administers the computer-based exam at PSI test centers. PSI publishes the Candidate Information Bulletin, which defines the exam content, format, and rules.

The practical consequence: PSI handles your appointment, your exam fee, and your score; the Board handles your license. Passing the exam does not issue a license by itself. We return to that distinction in the licensing-order section below.

A Note on the Name "CO-JE"

"CO-JE" is the working abbreviation used on this site. It is not an official examination code published by the Board or PSI. On PSI's side, the exam designation you will see is Journeyman Wireman (JW). Colorado also has a separate assessment for six-plus-year apprentices, which is a different exam and is not what this article covers.

The acronym also appears elsewhere in other fields as an abbreviation for unrelated credentials. Everything here concerns only the Colorado journeyman electrician license. When you search for official information, look for the State Electrical Board and the PSI bulletin for the Journeyman Wireman exam rather than relying on the abbreviation. Related explainers include CO-JE meaning and what CO-JE certification is.

How the Exam Is Built

The exam is computer-based and multiple choice. The numbers that matter:

FeatureDetail
Scored questions90
Time for scored component240 minutes
Unscored (experimental) itemsUp to 10 additional, with 30 additional minutes
Passing threshold70%, or 63 scored answers correct
Open book?Yes, using the references PSI supplies at the test center
CalculatorOn-screen calculator available
Score reportingProvided after testing

One subtle point: the 240 minutes describes the scored component. If your exam includes experimental items, your appointment can run longer, because those unscored items come with their own 30 minutes. You will not know which questions are unscored, so treat every question as if it counts.

Open book does not mean easy: The exam is open book, but the references are the ones PSI supplies. Personal references are prohibited, and writing in, highlighting, underlining, or indexing the supplied materials is not allowed. Do not assume advice from other states about bringing a personally tabbed NEC applies here. The skill being tested is fast, accurate navigation of the code and formula pages you are given.

For a deeper look at difficulty, see how hard the CO-JE exam is, and for the exact scoring math, the CO-JE passing score. Note that no current first-attempt or overall candidate pass rate has been publicly verified, and the 70% standard is a passing threshold, not a pass-rate statistic. Our pass rate article explains what can and cannot be said.

The 13 Content Areas

The Candidate Information Bulletin organizes the exam into 13 content headings, each with a published item allocation (the number of scored questions drawn from it). Official percentage weights are not published, so think in item counts rather than percentages.

Content AreaScored Items
General Electrical Knowledge11
Services, Feeders, and Branch Circuits9
Grounding and Bonding14
Overcurrent Protection6
Conductors and Cables8
Raceways and Boxes5
Special Occupancies5
Special Equipment6
Electrical Devices5
Motors6
Transformers4
Photovoltaics2
Electrical Calculations9

The allocations total 90. Our complete guide to all 13 content areas walks through each one in detail. Here are the areas that most deserve your attention.

Grounding and Bonding (14 items)

The single largest allocation. At 14 of 90 questions, it is worth more than any other area, so weakness here can sink an otherwise strong attempt.

  • Distinguish grounding from bonding in practice, not just in definition
  • Know how to find the relevant NEC articles and tables quickly in the supplied book
  • Practice sizing questions that require reading a table and applying a condition

General Electrical Knowledge (11 items)

The second-largest area, and the one that rewards solid fundamentals: electrical theory, common formulas, and basic principles that underpin the rest of the exam.

  • The bulletin recommends reviewing electrical theory and common formulas, not only code navigation
  • Ohm's law relationships and power formulas should be automatic

Electrical Calculations (9 items) and the Calculation Thread

Calculation skill matters beyond the one heading that carries its name. Questions in Services, Feeders, and Branch Circuits (9 items), Motors (6), and Transformers (4) frequently require math as well, so budget practice time for worked problems across several areas.

  • Load calculations, conductor and overcurrent sizing, and motor-related figures
  • Learn to use the on-screen calculator efficiently so arithmetic does not eat your clock

Small allocations should not be ignored. Photovoltaics carries only 2 items and Transformers only 4, but because the passing line is 63 of 90, every point counts. Still, a rational plan spends the most hours where the item counts are highest.

The NEC Edition Transition

This is the part of the exam picture that needs the most care, because the published sources do not fully agree.

The retrieved bulletin text states that, effective August 1, 2026, exam questions are consistent with the 2026 NEC, and that PSI supplies the 2026 NEC. It also says a 2023 book may be requested until December 1, 2026, after which that option ends. However, older introductory and reference text in the same material still specifies the 2023 NEC.

Verify before you schedule: Do not treat the availability of a 2023 reference book as proof that you can choose a separate 2023-based exam, and do not treat Colorado's code adoption date and the exam's stated transition as interchangeable. Confirm the reference edition and your appointment arrangements directly with PSI before you study from a particular edition or book your seat.

The practical advice: study from the edition PSI confirms for your exam window, and expect that if you learned the code on an older edition, you will need to re-orient on changed article numbering and requirements. Scheduling details are covered in our exam dates and scheduling guide.

Eligibility: Hours, Classroom Training, and SB25-165

Colorado's experience requirements changed with SB25-165, signed June 3, 2025. The enacted change supersedes older descriptions you may still find online, including the older 4,000-hour commercial/industrial figure and the older four-year classroom lookback. Current requirements, as summarized from the supplied sources:

  • 8,000 qualifying hours of experience over at least four years.
  • Within that, 2,000 hours over at least two years in commercial, industrial, or substantially similar work.
  • At least 288 classroom-training hours within the last eight years of training, apprenticeship, or practical experience, documented separately from on-the-job hours.

SB25-165 also lets the Board credit older training when a candidate shows evidence of at least four additional hours on the current or immediately previous NEC or other adopted standards. This is a Board-reviewed exception, not automatic credit.

On the training detail, Rule 1.7(D)(1)(b) specifies 10-40 hours of OSHA-curriculum safety instruction within the 288-hour training requirement. This wording is corroborated in an older version of the Board's rules (3 CCR 710-1), but the current rule version should be confirmed, since the rules register shows a version effective July 15, 2026. Do not rely on older documents for the training lookback or the NEC edition.

Key Takeaway

Start documenting classroom hours and on-the-job hours separately now. The Board reviews experience and education as distinct evidence, and sloppy records are a more common obstacle than the exam content itself. See CO-JE requirements for the full qualification walkthrough, and check the Board's Applications and Forms page for current paperwork.

Exam First, License Application Second

Colorado's sequence is the reverse of what some candidates expect: you take and pass the exam before submitting the license application. That ordering has two consequences worth internalizing.

  1. A passing score does not equal a license. Passing alone does not establish eligibility. The Board still reviews your documented experience and education.
  2. You can pass and still be turned away if your hours or classroom documentation fall short. Confirm your eligibility picture against the requirements before you invest in exam fees and months of study.

If your documentation is thin, fix that first. A pass that cannot be converted into a license is a pass you will have to wait on.

Costs and Retakes

ItemAmount
Initial examination fee$78
Retest fee$73
Initial licensing chargeNot independently verified; separate from the exam fee
Renewal chargeNot independently verified; separate from the exam fee

The exam fee is a testing cost only. Initial licensing and renewal charges are separate, and current amounts were not independently verified here, so confirm them with the Board. No member or non-member pricing tiers are published for this exam. For the full picture, including costs that sit outside the exam fee, read the CO-JE certification cost breakdown.

If you do not pass, the bulletin permits you to schedule from the following day for the next available test date, paying the retest fee. That is not a promise of an immediately open seat, so availability at your test center will determine how quickly you can return. Use the time between attempts to review your weakest areas, starting with the highest-allocation ones.

Staying Licensed: Renewal and CE

Licensing does not end at issuance. Colorado electricians renew on a three-year cycle and complete 24 hours of continuing education (CE), including at least four hours on NEC changes and no more than four credited safety hours.

There is a notable exemption: initial licenses obtained by examination between October 1, 2023 and September 30, 2026 are exempt from CE until after their first renewal. The current cycle expires September 30, 2026. A prior review also noted a renewal window through November 30, 2026, but that post-expiration window could not be independently revalidated, and it must not be read as permission to practice on an expired license. Check the Board's CE page and DORA's reminders for current dates.

Sequencing Your Preparation

Rather than a generic study schedule, tie your plan to the allocations above. A reasonable CO-JE-specific sequence:

Weeks 1-2

Foundations and Calculations

  • General Electrical Knowledge (11 items): theory and common formulas
  • Electrical Calculations (9 items): build calculator fluency early, since math recurs in other areas
Weeks 3-4

The Heavy Hitters

  • Grounding and Bonding (14 items): your largest single block, so drill it repeatedly
  • Services, Feeders, and Branch Circuits (9 items) paired with Overcurrent Protection (6 items)
Weeks 5-6

Equipment and Wiring Methods

  • Conductors and Cables (8), Raceways and Boxes (5), Electrical Devices (5)
  • Motors (6), Transformers (4), Special Equipment (6), Special Occupancies (5), Photovoltaics (2)
Final Week

Timed Mixed Practice

  • Full-length practice under time pressure using the correct NEC edition
  • Revisit missed Grounding and Bonding and calculation questions

Whatever pace you choose, practice with questions that mirror the exam's style, and train code navigation in the edition PSI will supply. Our CO-JE study guide expands on resources and pacing, and the CO-JE cheat sheet condenses the must-know facts into one page. You can also test yourself on the main practice test site, which is designed around the exam's content areas.

Frequently Asked Questions

What does CO-JE certification mean?

Here, CO-JE refers to the Colorado Journeyman Electrician License Exam, the exam required for the Colorado journeyman electrician license issued by the State Electrical Board. "CO-JE" is a working abbreviation, not an official exam code; PSI's designation is Journeyman Wireman (JW).

How many questions are on the exam, and what score passes?

There are 90 scored multiple-choice questions in 240 minutes, with up to 10 additional unscored items and 30 extra minutes. Passing requires 70%, which is 63 correct scored answers.

Can I bring my own NEC book?

No. PSI supplies the NEC and a formula page, and personal references are prohibited. Writing, highlighting, underlining, or indexing the supplied references is also not allowed. An on-screen calculator is available.

Do I need to pass the exam before applying for the license?

Yes. You take and pass the exam before submitting the license application, but passing alone does not establish eligibility. The Board reviews your documented experience and classroom training separately.

How much does the exam cost, and what if I fail?

The initial exam fee is $78 and a retest is $73. After a failed attempt you may schedule from the following day for the next available date, though a seat is not guaranteed. Licensing and renewal charges are separate from the exam fee. See whether the credential is worth it and the salary guide for broader context.

Ready to pass your CO-JE exam?

Put this into practice with free CO-JE questions across every exam domain.