A. For underground electric distribution systems installed in subdivisions, the utility shall construct a connection from the boundary line of the applicant's subdivision to the utility's existing supply facilities, subject to the following provisions:
(1) The extension from the boundary line of the subdivision, for a maximum distance of 200 feet, shall be made underground, at the utility's expense; and
(2) If an extension in excess of 200 feet is required, then the extension over 200 feet shall be made underground in accordance with the regular extension of the utility on file with the Commission, subject to appeal to the Commission if this should appear to be impracticable.
B. For underground electric service lines to new residential buildings or mobile homes for which §A of this regulation is not applicable, the utility shall construct an underground line from the lot line of applicant's property to the existing underground or overhead line on either side of the street or road in front of the lot, at no charge to the applicant. If there is no electric supply facility or overhead facilities of another public service company which may be jointly shared along the street or road at that location, then the utility shall construct an underground line to the nearest practicable existing electric supply facilities in accordance with the provisions of the regular extension rules in the tariff of the utility on file with the Commission. However, any charge or deposit to the applicant may not exceed the equivalent of $1 per foot of line extension not on applicant's property, subject to appeal to the Commission under Regulation .10, if this should appear to be impracticable.
C. An electric company may not permit any person not a public service company to make attachment to any electric company existing overhead facilities for the purpose or intended purpose of providing overhead service to a customer to whom the electric company is required to provide underground service in accordance with the regulations of the Commission with respect to underground service.