A public service company may issue stocks and stock certificates or other evidences of interest or ownership, and bonds, notes and other evidences of indebtedness payable at periods of twelve months or more after the date thereof, for the following purposes and no others, namely:
1. For the acquisition of property (including stocks, stock certificates or other evidences of interest or ownership, and bonds, notes and other evidences of indebtedness of other persons, firms, associations or corporations when the acquisition thereof has been approved and authorized by the Commission);
2. For the construction, completion, extension or improvement of its facilities;
4. For the discharge or lawful refunding of its obligations; or
5. For the reimbursement of moneys actually expended from income, or from any other moneys in the treasury of the public service company not secured by or obtained from the issue of its stocks or stock certificates or other evidences of interest or ownership of bonds, notes or other evidences of indebtedness payable at periods of twelve months or more after the date thereof, for any of the aforesaid purposes except maintenance of service in cases where the applicant shall have kept its accounts and vouchers for such expenditures in such manner as to enable the Commission to ascertain the amount of moneys so expended and the purposes for which such expenditures were made.