Within thirty (30) days after the effective date of this chapter
each public utility shall file with the Board a preliminary schedule showing all
rates, classifications and charges for service of every kind furnished by it, and
all rules and regulations in force and effect relating thereto. Thereafter, upon notice
from the Board current schedules shall be submitted, in lieu of the preliminary schedules
previously filed, and maintained on file with the Board on such forms and under such
rules and regulations as the Board may prescribe. Provided, however, the provisions
of this section shall not be applicable to charges for contributions in aid of construction,
refundable or nonrefundable agreements or other advances.
