For alternating current (AC) systems, **PVC-insulated copper or aluminum cables** are commonly used. The type of cable depends on the application, but some typical cables for AC systems include:
1. **Single-Core and Multi-Core Cables**:
- These are used in residential, commercial, and industrial electrical installations.
- They typically consist of copper or aluminum conductors and are insulated with materials like PVC (Polyvinyl Chloride) or XLPE (Cross-linked Polyethylene).
- Commonly used types include **PVC cables** and **armored cables**.
2. **Armored Cables (SWA - Steel Wired Armored)**:
- These are used for outdoor or underground installations, where additional protection against mechanical damage is needed.
- The steel armor helps prevent damage from external forces.
3. **Flexible Cables**:
- These are used for applications where flexibility is required, like connecting electrical appliances, motors, and devices.
- Often used in power tools, light fixtures, and portable generators.
4. **Low Voltage Cables**:
- In homes, you will often see **1.5mm², 2.5mm²**, or **4mm²** copper conductors for lights, sockets, or heavy appliances (like air conditioners).
5. **High Voltage Cables**:
- For transmission and distribution of power, higher-grade cables with insulation materials that can withstand higher voltages are used.
In general, it's important to choose a cable with the appropriate voltage rating, current carrying capacity, and insulation for your specific AC application.
Let me know if you want more details about a specific type of cable!