Because steel is not a good conductor of electricity. Copper is the best conductor for electricity.
copper is cheaper to manufacture and easier to bend then steel
Steel is not used as an electrical conductor because, although it is a conductor, it's not a very good conductor -as is copper and aluminium, for example. A steel-wire core is used, however, to reinforce aluminium conductors on transmission tower lines
Copper and aluminum used for electric wires
Wires are used as electricity conductors.
Copper has been used lately in wires and cables like coaxial and electric wires.
I think copper is cheaper.
The most highly recommended type of binding wire used to bind steel is stainless steel binding wire. Annealed steel wires and galvanized steel wire can be used as well.
The cores of electric wires and cables.The cores of electric wires and cables.The cores of electric wires and cables.The cores of electric wires and cables.
Steel.
The wires must first be heat resistant. For that the best wires that can be used are wires made up of superconductors.
Steel Wire Armored.
Copper is used in electric wires because it is the best conductor of electricity that is known, apart from silver which is slightly better. For overhead wires a common material to use is aluminum because it is much lighter, although not such a good conductor. Overhead high-voltage wires usually use aluminium stranded wire with one or more steel strands in the centre to give strength.