If, upon inspection, it is found that all work covered by one permit is completed and complies with the provisions of this chapter, the inspector shall issue to the person installing the work a certificate of approval. If the entire installation is completed and given final approval, the certificate shall authorize connection to the electrical service and the use of the installation and written notice of such authorization shall be sent to the public utility corporation furnishing the electrical service and a white tag, stating such final approval and authorization, shall be posted in the service switch box. (Prior code § 16-1-16)