This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Both metal and copper oxidize when exposed to oxygen and this is a natural process. Copper that is exposed to the outside environment is more likely to turn green and that is why copper vases and decorative pieces in gardens are often green.
Tinned copper is an easy and effective way of keeping a copper conductor from tarnishing, from becoming oxidized. You've probably seen copper when it is oxidized. It turns green. The Statue of Liberty is a famous example of copper oxidation.ertain formulations of TeflonÂ® are very caustic and can create copper oxide just by being extruded onto a copper wire. Having a tinned copper conductor reduces this effect. One other way we can do this is silver coated copper. When silver oxidizes, that silver oxide is exactly the same conductivity as normal silver.