Aluminum conductors reinforced with steel (known as acsr) are primarily used for medium and high voltage lines and may also be used for overhead services to individual customers. Aluminum cable is used because it has about half the weight of a comparable resistance copper cable (though larger diameter due to lower fundamental conductivity), as well as being cheaper.[1] some copper cable is still used, especially at lower voltages and for grounding. It is usually used in the overhead power distribution system of our countryacsr offers optimal strength for line designadditional corrosion protection is available through the application of grease to the corer or infusion of the complete cable with greaseacsr is widely used in overhead electric power transmission and distribution lines with various voltage. Drum, steel drum