Electrical and electronic waste is another growing source, including power cables, motors, transformers, and consumer electronics, though each item contains relatively small amounts of copper. https://www.quora.com/What-are-the-key-sources-of-recycled-copper/answer/Coherent-Market-Insights-1?ch=10&oid=1477743868407056&share=6dbacd25&srid=uTm6RG&target_type=answer