Checked against primary sources 2026-09-07

The numbers, with both sides

Colorado Electrician Hours and Experience: What Counts

Colorado counts hours and it counts years, and you have to satisfy both. This page prints every published figure with the Board page, the statute and the rule that carries it, including one place where the statute and the rule do not agree.

Test yourself: thirty free questions, timed

Residential wireman: 4,000 hours over two years

The Board's applications page prints it as 4,000 hours of residential only experience earned in no less than 2 years.

C.R.S. 12-115-110(3) says an applicant shall furnish written evidence of at least two years of accredited training or four thousand hours over a period of at least two years of practical experience in wiring one-, two-, three-, and four-family dwellings. Board rule 3 CCR 710-1.7 prints the same figure as 4,000 hours earned in no less than two years.

Note the word only. Residential hours are what count here, and the statute ties them to one, two, three and four family dwellings.

Journeyman: 8,000 hours over four years, with 2,000 commercial

The Board's applications page prints 8,000 hours of experience earned in no less than 4 years, 2,000 hours of which must be in commercial or industrial work. The Board's own journeyman application preview repeats both numbers and adds a warning: if you have not obtained this experience yet, do not apply.

C.R.S. 12-115-110(2)(a)(I) is the statute behind the 8,000, and the commercial split is stated as two thousand hours over a period of at least two years of the applicant's experience being in commercial, industrial, or substantially similar work.

So the commercial block has its own clock. Two thousand hours over at least two years, sitting inside the 8,000 over at least four.

It is 2,000 commercial hours, not 4,000

The figure is 2,000, and it appears in three state places: the Board's applications page, the Board's own journeyman application preview and the statute.

One prep site publishes at least 4,000 hours must be in commercial or industrial work, on a Colorado exam guide dated July 10, 2026. That figure does not appear in any state source we read.

We are not going to guess which is intended. Work to the state number, keep the record for every commercial hour you log, and if a Board reviewer asks for more, you will have it.

Master: four routes

The Board's applications page lists four ways in, quoted here in its own terms.

• 10,000 hours of experience earned in no less than 5 years.
• A bachelor's degree in electrical engineering from an accredited college or university and 2,000 hours of construction experience earned in no less than 1 year.
• Graduate of an electrical trade school or community college and 8,000 hours of experience earned in no less than 4 years.
• 2,000 hours of experience earned in no less than 1 year in addition to the journeyman requirements, some of which must be in planning and layout, and some of which must be supervision while in possession of a journeyman electrician license.

C.R.S. 12-115-110(1) carries the same shape in statutory language, and rule 3 CCR 710-1.7 prints the plain route as 10,000 hours earned in no less than five years.

The fourth route is the one a working journeyman uses, and it is the only route that names planning, layout and supervision as the kind of hour it wants.

The 288 classroom hours

The Board's page is blunt: 288 hours of classroom education is required for ALL applicants, with no grandfathering of any apprentice registration. The journeyman application preview asks you to upload documentation of completing 288 hours of electrical education.

C.R.S. 12-115-110(2) says what the hours have to cover: at least two hundred eighty-eight hours of training in safety, the national electrical code and its applications, and any other training required by the board, provided by an accredited college or university, an established industry training program, or any other provider whose training is conducted in compliance with rules adopted by the board.

Rule 3 CCR 710-1.7 adds two limits worth knowing. The 288 hours of approved training is in addition to any stipulated on-the-job training requirement, and training earned under this requirement shall not qualify for any other education, training, or experience credit. The rule applies the duty to people who, on or after January 1, 2011, entered an apprenticeship program or registered as an apprentice.

The conflict: eight years or four

The statute and the rule put the classroom hours in different windows, and we are printing both rather than picking one.

The statute. C.R.S. 12-115-110(2) places the training during the last eight years of the applicant's training, apprenticeship, or practical experience.

The rule. 3 CCR 710-1.7 says during the last four years of apprenticeship, an applicant for a journeyman electrician's license shall provide documented written evidence of at least 288 hours of electrical training.

Eight years against four is a real difference for anyone whose schooling came early and whose hours came slowly. The rule text we read is published with a currency date of Register Vol. 48, No. 11, June 10, 2025, and two permanent rule versions have taken effect since, so the wording may have moved. Ask the Board before you rely on the eight year reading, and cite both when you ask.

How the hours get proved

Rule 3 CCR 710-1.7 asks for documented written evidence of all in state and out of state experience, including exact employment dates, a breakdown of work by type and supervisor signatures. The work categories the rule names are commercial, residential, industrial and maintenance or service.

The Board publishes an Electrician Affidavit of Experience form for this. On the employer side, rule 1.6.B makes contractors keep the same breakdown, and rule 1.6.C makes them hand it over on request.

Ask for your record every time you leave a company, not years later when the company has changed hands.

Solar hours count, on three routes

C.R.S. 12-115-110(6)(a) opens three routes, not one, and they do not all credit at the same rate.

• (6)(a)(I) Two thousand hours as a NABCEP PV installation professional working for or working as a photovoltaic installer.
• (6)(a)(II) Up to two thousand hours of practical experience working under the supervision of a NABCEP PV installation professional, so long as that supervisor provides proof of the applicant's employment and an affidavit attesting that the applicant earned the hours under that supervision.
• (6)(a)(III) Up to four thousand hours as a NABCEP PV installation professional if the applicant submits additional documentation to the Board, including payroll records, work orders, project descriptions or other relevant materials that document significant solar industry work that qualifies as electrical hours.

Then subsection (6)(b) halves two of them: for every two hours that an applicant works as described in subsection (6)(a)(II) or (6)(a)(III) of this section, the applicant earns one hour. Route I is not named there, so its two thousand hours count as two thousand.

Run the ceilings through that conversion. Route II caps at 2,000 worked hours and earns 1,000. Route III caps at 4,000 worked hours and earns 2,000. So a reader on route III works 4,000 hours to bank the same 2,000 that route I banks in 2,000.

The subsections the credit feeds are 12-115-110(2)(a)(I) and (3)(a), the journeyman 8,000 hours and the residential wireman 4,000 hours. This came in with Senate Bill 25-165, the same bill that creates the photovoltaic installer registration due December 31, 2026.

Questions people ask

How many hours do I need for a Colorado journeyman license?

8,000 hours earned in no less than 4 years, with 2,000 of them in commercial or industrial work earned over at least 2 years, plus 288 classroom hours. The Board prints all three figures on its applications page.

Is it 2,000 or 4,000 commercial hours in Colorado?

Two thousand. The Board's applications page, the Board's own journeyman application preview and C.R.S. 12-115-110 all say 2,000 hours of commercial, industrial or substantially similar work. A prep site publishes 4,000, and that figure appears in no state source we read.

How many hours does a Colorado residential wireman need?

4,000 hours of residential only experience earned in no less than 2 years, on the Board's page. The statute allows two years of accredited training as the alternative.

How many hours for a Colorado master electrician?

10,000 hours in no less than 5 years on the plain route. There are three other routes: an electrical engineering degree with 2,000 hours, a trade school or community college qualification with 8,000 hours, or 2,000 hours beyond the journeyman requirements including planning, layout and supervision.

Do the 288 classroom hours have to be recent?

The sources disagree. C.R.S. 12-115-110(2) places them in the last eight years of your training or experience, and 3 CCR 710-1.7 says the last four years of apprenticeship. Ask the Board and quote both, because we cannot resolve it from published text.

Do solar hours count toward a Colorado electrician license?

Yes, on three routes. C.R.S. 12-115-110(6)(a) allows 2,000 hours as a NABCEP PV installation professional, up to 2,000 hours supervised by one, or up to 4,000 hours backed by payroll records and project documentation. Subsection (6)(b) credits the second and third at one hour for every two worked, so the 4,000 hour route earns 2,000.

What this page cites

• State Electrical Board applications page The Board's own hour figures for residential wireman, journeyman and the four master routes, plus the 288 classroom hours. Read 7 September 2026. source
• C.R.S. 12-115-110, license requirements The statutory hours for each license, the commercial split, the 288 hours of training and the eight year window. source
• 3 CCR 710-1.7, application for licensure The rule's hour figures, the four year classroom window, the documentation requirements and the work categories. Text current through Register Vol. 48, No. 11, June 10, 2025. source
• Board journeyman application preview The Board's own application text, repeating the 8,000 hours, the 2,000 commercial hours and the 288 education hours. Read 7 September 2026. source
• 3 CCR 710-1.6, employer records Requires contractors to keep exact employment dates and hours split by residential against commercial or industrial, and to give them to the apprentice on request. source