92.—Notwithstanding anything contained in any Act or Order, electricity supplied by an authorised undertaker within his district to any company or authority being the owners or lessees of a railway, tramway, dock, harbour, or canal undertaking may be used by the company or authority receiving the supply for the purposes of haulage or traction or for lighting vehicles or vessels used on the railway, tramway, dock, harbour, or canal or any part thereof, or, subject to the consent of the Board for lighting any of the premises thereof.