(a) Except as otherwise provided in this section, the following licenses may be issued by the Department of Consumer Protection, with the advice and assistance of the boards, under the provisions of § 20-333:

(1) (A) An unlimited contractor‘s license may be issued to a person who has served as a journeyman in the trade for which such person seeks a license for not less than two years and, if such service as a journeyman was outside this state, has furnished evidence satisfactory to the appropriate state board or the department that such service is comparable to similar service in this state, or has furnished satisfactory evidence of education and experience and has passed an examination which has demonstrated that such person is competent in all aspects of such trade to be an unlimited contractor. (B) A limited contractor’s license may be issued to a person who fulfills the requirements of subparagraph (A) of this subdivision as to a specific area or areas within the trade for which such person seeks a license. (C) The holder of an unlimited or a limited contractor’s license may, within the trade, or the area or areas of the trade, for which such holder has been licensed, furnish supplies and do layout, installation, repair and maintenance work and distribute and handle materials, provided nothing in this subdivision shall be construed to authorize the performance of any action for which licensure is required under the provisions of chapter 390 or 391. Such licensee shall furnish the board or the department with evidence that such licensee will comply with all state requirements pertaining to workers’ compensation and unemployment insurance and that such evidence shall be available to any properly interested person prior to the issuance of a license under this subdivision.

(2) (A) An unlimited journeyman’s license may be issued to any person who has completed a bona fide apprenticeship program, including not less than four years’ experience in the trade for which such person seeks a license, and has demonstrated such person’s competency to perform all services included in the trade for which a license is sought by successfully completing the applicable state licensure examination. (B) A limited journeyman’s license may be issued to a person who fulfills the requirements of subparagraph (A) of this subdivision in a specific area or areas of the trade for which such person seeks a license, provided the length of experience required may be less than four years for such area or areas of the trade.

(3) An apprentice‘s permit may be issued for the performance of work in a trade licensed under the provisions of this chapter, for the purpose of training, which work may be performed only under the supervision of a licensed contractor or journeyman.

(4) An apprentice permit shall expire upon the failure of the apprentice holding such permit to apply for the first licensure examination given by the department following completion of an apprentice training program as provided in subdivision (2) of this subsection.

(b) The following licenses for solar thermal work may be issued by the department, with the advice and assistance of the examining board for heating, piping, cooling and sheet metal work, under the provisions of § 20-333, including an examination on solar work:

(1) A solar thermal contractor’s license may be issued to any person who (A) not later than July 1, 1984, (i) has been issued a P-1, P-3, S-1, S-3, S-5, S-7, D-1 or D-3 license under subdivision (1) of subsection (a) of this section or installs at least six fully operational solar hot water heating systems, and (ii) qualifies for a solar thermal contractor’s license under § 20-333, or (B) has served as a solar thermal journeyman for not less than two years.

(2) A solar thermal journeyman’s license may be issued to any person who (A) not later than July 1, 1984, (i) is issued a P-2, P-4, S-2, S-4, S-6, S-8, D-2 or D-4 license under subdivision (2) of subsection (a) of this section, and (ii) qualifies for a solar thermal journeyman’s license under § 20-333, (B) after July 1, 1984, is issued a P-2, P-4, S-2, S-4, S-6, S-8, D-2 or D-4 license under subdivision (2) of subsection (a) of this section and whose bona fide apprenticeship program includes instruction in solar thermal work, or (C) after July 1, 1984, completes a bona fide solar thermal work apprenticeship program and has not less than two years’ experience in solar thermal work. A solar thermal journeyman may work only under the supervision of a licensed solar thermal contractor.

(3) A solar thermal apprentice’s permit may be issued for the performance of solar thermal work for the purpose of training. Such work may be performed only under the supervision of a licensed solar thermal contractor or journeyman.

(c) The following licenses for fire protection sprinkler systems work may be issued by the department: (1) A fire protection sprinkler contractor’s license may be issued to a person who provides satisfactory evidence of education and experience in fire protection sprinkler systems work, as defined in subdivision (9) of § 20-330, and who has passed an examination which has demonstrated competence in all aspects of such trade. Applicants for such license shall complete a form provided by the commissioner; and (2) a journeyman sprinkler fitter‘s license may be issued to a person who has completed a bona fide apprenticeship program pursuant to § 20-334c, and who has not less than four years experience in fire protection sprinkler systems work, as defined in subdivision (9) of § 20-330, or who has been licensed under this section, and has passed an examination which has demonstrated competence in all aspects of such trade. Applicants for such license shall complete a form provided by the department.

(d) The following licenses for irrigation work may be issued by the department upon authorization of the examining board for plumbing and piping work under the provisions of § 20-333: (1) An irrigation contractor’s license, and (2) an irrigation journeyman’s license.

(e) The following licenses for sheet metal work may be issued by the department upon authorization of the examining board for heating, piping, cooling and sheet metal work, under the provisions of § 20-333, in addition to any licenses or permits issued for such work under subsection (a) of this section:

(1) Prior to January 1, 2002, a limited contractor’s license for large commercial sheet metal work may be issued to any person who has worked as a sheet metal contractor or successfully worked in such trade in the capacity of a journeyman sheet metal worker for not less than two years.

(2) On or after January 1, 2002, a limited contractor’s license for large commercial sheet metal work may be issued to any person who has (A) served as a journeyman in the trade for which such person seeks a license for not less than two years, and (B) if such service as a journeyman was outside this state, furnished evidence satisfactory to the examining board for heating, piping, cooling and sheet metal work that such service is comparable to similar service in this state.

(3) Prior to January 1, 2002, a limited journeyman’s license for large commercial sheet metal work may be issued to any person who has (A) successfully completed a bona fide apprenticeship program, including not less than four years of experience in the trade for which such person seeks a license, or (B) demonstrated such person’s competency to perform such work by furnishing proof of continuous employment in such trade for not less than eight thousand hours within the previous five years, subject to the approval of the examining board for heating, piping, cooling and sheet metal work.

(4) On or after January 1, 2002, a limited journeyman’s license for large commercial sheet metal work may be issued to any person who has (A) successfully completed a bona fide apprenticeship program, including not less than four years of experience in the trade for which such person seeks a license, and (B) demonstrated such person’s competency to perform all services included in the trade for which a license is sought by successfully completing the applicable state licensure examination.

(f) On and after January 1, 2002, the following licenses for automotive glass work and flat glass work may be issued by the department upon authorization of the examining board for automotive glass work and flat glass work, under the provisions of § 20-333:

(1) On and after January 1, 2002, but before January 1, 2003, an unlimited contractor’s license for automotive glass work or flat glass work may be issued to any person who has served as a journeyman in the trade for which such person seeks a license for not less than three years. On and after January 1, 2002, an unlimited contractor’s license for automotive glass work or flat glass work may be issued to any person who (A) has served as a journeyman in the trade for which such person seeks a license for not less than three years and, if such service as a journeyman was outside this state, has furnished evidence satisfactory to the examining board for automotive glass work and flat glass work that such service is comparable to similar service in this state, and (B) has furnished satisfactory evidence of education and experience and has passed an examination which has demonstrated that such person is competent in all aspects of such trade to be an unlimited contractor for automotive glass work or flat glass work.

(2) On and after January 1, 2002, but before January 1, 2003, an unlimited journeyman’s license for automotive glass work or flat glass work may be issued to any person who has served in the trade for which such person seeks a license for not less than two years. On and after January 1, 2002, an unlimited journeyman’s license for automotive glass work or flat glass work may be issued to any person who has successfully completed a bona fide apprenticeship program as required by the examining board for automotive glass work and flat glass work, and has demonstrated such person’s competency to perform all services included in the trade for which a license is sought by successfully completing the applicable state licensure examination.

(g) On or after July 1, 2003, a medical gas and vacuum systems certificate for medical gas and vacuum systems work may be issued by the department, upon the authorization of the Plumbing and Piping Work Board or the Heating, Piping and Cooling Work Board, as appropriate, to any person who (1) has been issued a P-1, P-2, S-1, S-2, S-3 or S-4 license under subdivision (1) of subsection (a) of this section, (2) has been certified as a medical gas and vacuum system brazer issued in accordance with the standards of Section IX entitled “Welding and Brazing Qualifications” of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code, and (3) has been certified as having completed an approved training course on medical gas and vacuum system installation as required by American National Standards Institute-American Society of Sanitary Engineering Series 6000. No person shall perform medical gas and vacuum systems work unless such person has obtained a certificate pursuant to this subsection. Such certificate shall be renewed consistent with the renewal process for the prerequisite licenses. The fee for such certificate shall be fifty dollars.

(h) A limited sheet metal power industry license may be issued to any person upon authorization of the examining board for heating, piping, cooling and sheet metal work, subject to the provisions of § 20-333. Prior to taking the licensure examination, an applicant shall successfully complete an education and training program established and approved by the Labor Department with the advice of the Connecticut State Apprenticeship Council. The holder of such license may only install, erect, replace, repair or alter breeching exhaust and inlet air systems at electric generation facilities, including, but not limited to, cogeneration plants, bio-mass facilities, blast furnaces, combined cycle facilities, fossil fuel, gas and hydro power facilities, incinerators and nuclear power facilities. The holder of such license may only perform such work while in the employ of a contractor licensed to perform such sheet metal work under this chapter.

(i) The Electrical Work Board shall authorize any person to install, service and repair residential security systems limited to twenty-five volts and five amperes in one to three-family residential dwellings, provided the person is in the employ of an electrical contractor holding an E-1 unlimited contractor license or an L-5 contractor license issued pursuant to subdivision (1) of subsection (a) of this section and the person has successfully completed an apprenticeship and training program established and approved by the Labor Department with the advice of the Connecticut State Apprenticeship Council. Any person authorized to work under this subsection shall not perform telecommunications electrical work, as defined in § 20-340b, with the exception of work involving interface wiring from a residential security system to an existing telephone connection for monitoring purposes. Any person who is authorized to work under this subsection shall, no later than fifteen months after being issued said authorization, secure an L-6 limited electrical journeyperson’s license pursuant to subdivision (2) of subsection (a) of this section.