Why is the copper wire in my cable black? | Prysmian
Sometimes, the copper wire in a new cable may have a mottled black surface when the insulation is stripped back.
The copper core of the cable has turned black—is it a
Most complaints about "blackened copper" turn out to be caused by either excessive operating temperature, water
Why are cable conductors discolored?
Copper conductor in the air for a long time exposure will occur oxidation reaction, this process will form a layer of copper oxide
Why does the copper wire turn black?
The location and circumstances of blackening in copper conductors vary: the ends of the cable conductors may be black, or both
Technical note
This reference is intended for preliminary ODN and passive infrastructure research. Topology, split ratio, box or cabinet capacity, closure rating, cable type, test limits and applicable standards must be verified for the specific project.