In all installation, alteration and repair of electrical wiring special attention shall be paid to the mechanical execution of the work and care shall be taken in neatly running connections, soldering, taping conductors or any approved mechanical or pressure connectors and in securing and attaching fittings. If the Building Inspector finds that the work is not so executed, said official shall give notice of the necessary changes pursuant to Subsection 160.17(4) of this chapter.