Section 387(1)(d) in The Calcutta Municipal Corporation Act, 1980
(d)place and maintain -(i)electric wires for the purpose of lighting such lamps under, over, along or across, and(ii)posts, poles, standards, stays, struts, brackets and other contrivances for carrying, suspending or supporting lamps or electric wires in or upon, any immovable property without being liable to any claim for compensation thereof: