The following classes of licenses are hereby established for the city, county or metropolitan area as herein defined and the annual fee therefor shall be as follows:
a. Class A electrical contractor, One Hundred Dollars ($100.00) per year.
b. Class B electrical contractor, One Hundred Dollars ($100.00) per year.
c. Motor shop, Fifty Dollars ($50.00) per year.
d. Electrical sign contractor, Fifty Dollars ($50.00) per year.
e. Appliance repair shop, Fifty Dollars ($50.00) per year.