Provided that in fixing any such terms and conditions the Board shall not show undue preference to any person.

Board not to supply electricity in certain circumstances Board not to supply electricity in certain circumstances.—Nothing contained in sections 29, 30 and 31 shall apply in any case where under section 16 it is not permissible for the Board to supply electricity directly to a licensee owning a generating station; and nothing in sections 41, 42 and 44 shall empower the Board to supply electricity directly to any licensee or person to whom it is not otherwise entitled so to supply electricity.