1.1 This specification covers round, zinc-coated, steel core wire with two classes of zinc coating for use in overhead electrical conductors. 1.2 This specification covers wire of diameter from 0.0500 to 0.1900 in. or 1.2 This specification covers round, zinc-coated (galvanized), steel core wire with three classes of zinc coating used for mechanical reinforcement in the manufacture of aluminum conductors, steel-reinforced (ACSR). The wire is furnished in three classes o