Price is often the first giveaway. If the deal seems too good to be true, it might be Copper Clad Aluminum (CCA). CCA is an aluminum core with a thin skin of copper. While lighter and cheaper, it has higher resistance and is prone to breaking.
When you see the label "99.9% Pure Copper" (often referred to as C11000 ETP copper), you are looking at a gold standard in conductivity. Here is why it beats out cheaper alternatives like Copper Clad Aluminum (CCA): buy pure copper wire
While all metals oxidize, pure copper develops a protective patina rather than rusting away, ensuring a much longer lifespan in various environments. Key Factors to Consider Before You Buy 1. The Gauge (AWG) Price is often the first giveaway