Electrical permits shall only be issued to a duly licensed Master Electrician, Limited, to a duly licensed Refrigeration, Air Conditioning and/or Heating Contractor, or to homeowners as provided by Section 9-117 of this Code. The application shall be signed by the licensed Master Electrician, Limited, responsible for technical supervision of the work, and shall identify the licensed Electrical Contractor, Limited, where applicable. The application from duly licensed Refrigeration, Air Conditioning and/or Heating Contractors shall be signed by the Master Mechanic employed by the Contractor. Residential telephone wiring on existing residential structures by a telephone company or a telecommunications services company, as defined in Section 5A-150(a)(15) of this Code, shall be subject to blanket permitting requirements only, as approved by the Prince George's County Chief Electrical Inspector.