A 2-core wire (or cable) is an electrical conductor consisting of two separate insulated wires—typically a "live" (phase) and a "neutral"—enclosed within a single protective outer sheath. Its primary function is to complete a single-phase AC circuit, allowing current to flow from a power source to a device and back.
Key Structural Components
Conductors: Usually made of copper (for high conductivity and flexibility) or aluminum (as a lightweight, cost-effective alternative). These can be solid for permanent fixed wiring or stranded for increased flexibility in portable devices.
Insulation: Each core is individually wrapped in a non-conductive material like PVC (general indoor use), XLPE (high-heat or industrial use), or Silicone Rubber (extreme temperatures).