A.   Management Of Systems: The municipal utility board shall have the care, custody and management of the existing electric system, water system, gas distribution system, street lighting system and sewage disposal system, and may enlarge and extend them as the necessity therefor arises, except as otherwise provided herein. It shall have under its control the complete operation of these utilities and such others as the people of the city may acquire. All of these utilities shall be collectively known as the municipal utility department.
   B.   Employment: The municipal utility board shall employ all persons necessary in the operation of the utilities and fix their salaries, conditions of servitude and terms of office.
   C.   Adoption Of Rules And Regulations: The municipal utility board shall adopt such rules and regulations as it may deem necessary. (See appendix A of this code.) (1988 Code § 17-101)