(A) There shall be three classes of electrical registration which shall be listed herein from highest to lowest classification and are set forth as follows:
(1) Master electrician (highest classification);
(2) Journeyman electrician;
(3) Apprentice.
(B) Contractors who hold the old Restricted Master shall be able to do installation, repair and maintenance of any and all work which have service 50 KVA single phase or 85 KVA three phase or smaller.
(`87 Code, § 30-48)