How about the weight of copper wire? Calculation method
Copper is generally used in electrolytic copper (commonly known as "copper"), its density is 8.5 x 10 general Kg/m 100m fand fand, so l * 6mm * 8.5 * 10 Kg/m =5.1KG fand fand almost 10 pounds
Cross sectional area of copper wire * copper wire long * copper wire density (copper alloy)