The referenced YouTube video segment focuses on a stage of copper wire production after the copper conductor has already been formed. Specifically, it details how the annealed copper conductor receives its insulation.
Here's a breakdown of the insulation process, based on the reference:
- The annealed copper conductor enters the insulation stage. Annealing is a heat treatment process that makes the copper more ductile.
- One or more extruders apply a plastic coating to the wire. This creates the insulated copper wire we commonly use.
Therefore, the referenced video segment only addresses the insulation stage of copper wire manufacturing, not the creation of the copper wire itself. To understand the whole process, additional sources describing the initial steps of copper wire production are required.