TYPES of structure (poles or towers) used for supporting the overhead lines or wires, such types of structures are called line supports.Line support plays a major ROLE in power transmission. It kept the proper spacing between the conductors and maintained the conductor at the prescribed distance from its ground parts.It also maintained the SPECIFIED ground clearance. These clearances are decided by electrical and mechanical considerations.The main requirement of the line supports is a low cost, low maintenance expense, and long life. The line supports are MADE up of wood, concrete, steel or aluminum.Types of Line SupportsElectric poleElectric towerElectric pole -: A pole which is used for supporting the small voltage (not more than 115 kV) transmission lines, such type of pole is called an electrical pole. It is usually made up of woods, concrete or steel. These poles are mainly CLASSIFIED into three typesWooden polesRCC polesSteel polesElectric tower -: The electrical tower is defined as the tower which is used for carrying the high voltage (above 230 kV) transmission lines.Such types of towers are made up of aluminum or steel which gives them strength for supporting the heavy electrical conductor. The electrical towers are broadly classified into various types.Self- Supporting TowersGuyed or Stayed Towers