What is line supports in transmission and distribution lines? All Questions › Category: Transmission And Distribution System › What is line supports in transmission and distribution lines? 0 Vote Up Vote Down Chetan Shidling Staff asked 5 years ago I need short information. 1 Answers 0 Vote Up Vote Down Chetan Shidling Staff answered 5 years ago The supporting structures for overhead line conductors are different types of poles and towers called line supports.