Hoisting equipment operator's license. Apprentice's certificate of registration. Exceptions.

(b) The provisions of this section shall not apply to: (1) Engineers under the jurisdiction of the United States, (2) engineers or operators employed by public utilities or industrial manufacturing plants, (3) any person operating either a bucket truck or a digger derrick designed and used for an electrical generation, electrical transmission, electrical distribution, electrical catenary or electrical signalization project, if such person: (A) Holds a valid limited electrical line contractor or journeyman's license issued pursuant to chapter 393 or any regulation adopted pursuant to said chapter, or (B) has engaged in the installation of electrical line work for more than one thousand hours, or (C) has enrolled in or has graduated from a federally recognized electrical apprenticeship program, (4) persons engaged in the recreational boating or fishing industry, except when engaged in construction-related work, or in agriculture or arboriculture, or (5) persons engaged in activities, or using equipment, excluded under section 29-221a .