A single-core cable refers to an electrical cable that consists of a single conductor (core), typically made of copper or aluminum, surrounded by insulation and often an outer sheath. It is used for carrying electrical current in circuits where only one conductor is required.

Single-core cables are used in a wide range of applications, including:

• Power Distribution: Within buildings for fixed wiring installations, such as running from circuit breakers to outlets and switches.
• Industrial Applications: For power transmission in machinery, equipment, and control systems.
• Automotive: In vehicles for wiring harnesses and electrical connections.
• Telecommunications: For signal transmission in telephone and data cables.

Advantages include:

• High Current Capacity: Single-core cables can handle high currents due to the larger cross-sectional area of the conductor.
• Low Resistance: Copper conductors offer low electrical resistance, ensuring efficient power transmission.
• Ease of Installation: Single-core cables are straightforward to install and terminate, reducing installation time and complexity.

Single-core cables are available in various sizes (cross-sectional area) and ratings, ranging from small gauges (e.g., 1.5mm²) for domestic wiring to larger gauges (e.g., 300mm² or more) for industrial and high-power applications. The size depends on the current-carrying capacity required for the specific application.

When selecting single-core cables, consider factors such as the voltage rating, current capacity (ampacity), insulation type, environmental conditions (indoor vs. outdoor), and compliance with regulations. Consulting with a qualified electrician or cable supplier can help ensure the correct choice for your specific application.