Any apprentice electrician holding an apprentice certificate, license, or equivalent document issued by another state shall register with and obtain the approval of the division of professional regulation in the department of labor and training prior to being permitted to work or serve as an electrician’s apprentice in this state. Provided, no approval shall be granted unless the applicant demonstrates to the board that the applicant is currently enrolled in one hundred forty-four (144) hours of electrical-related classroom instruction per year for not less than four (4) years in an indentured apprenticeship program approved by the department of labor and training.