Developments within this zoning classification shall have wiring, fixtures, equipment and appurtenances of every electrical wiring system installed and maintained in accordance with applicable codes and regulations of such systems. All distribution and service lines of electrical, telephone, television and other wire-carried type utility shall be located and constructed underground, except that the system of supply lines for multiple subdivision service by utilities may be overhead. Transformers, amplifiers or similar devices associated with the underground lines shall be located upon the ground or below ground level. Where the underground installation of such facilities is not a standard practice of the utilities involved, the subdivider or developer shall make all arrangements for payments associated with the nonstandard installation.