(a) All poles, guys, posts, towers, wires and other facilities and equipment erected on or above the surface of any street, alley, highway, avenue, sidewalk or other public ground shall be constructed, maintained, repaired, placed and used in accordance with the minimum ground requirements of the National Electrical Safety Code published by the American National Standards Institute. All pipes, ducts, conduits and cables constructed, laid, placed, maintained, repaired and used in and under any such street, alley, highway, avenue, sidewalk or other public ground shall be placed to such depth below the surface as shall be required by the standards and specifications of the Engineering Department.
(b) The requirements as to height or depth shall appear, when applicable, upon each permit issued by the Mayor under the provisions of this article.