The Manager shall establish the examination for applicants and determine a passing standard, and the Manager may periodically revise the examination for the purpose of maintaining it in accordance with modern electrical wiring standards. The Utility Board may establish a reasonable examination fee. Upon successful completion of the examination, the Manager shall issue a certificate authorizing such persons to engage in electrical work provided such work is done under authority of the appropriate license.
(‘85 Code, § 24.03(b))