What is the common material used for insulation on electrical cables?

The most common material used for insulation on electrical cables is PVC (polyvinyl chloride). PVC is widely favored due to its excellent electrical insulation properties, durability, and resistance to environmental factors such as moisture and UV light. This makes it ideal for a variety of electrical applications, including power cables and flexible cords.

Furthermore, PVC can be easily manufactured and molded, allowing for a variety of cable types and sizes. It is also a cost-effective material, which contributes to its prevalence in the industry. The versatility of PVC means that it can provide sufficient insulation while also being resistant to chemicals, making it a reliable choice for protecting electrical wiring.

While rubber, polyethylene, and silicone are also used for cable insulation in certain applications, they typically serve specific functions or are utilized in specialized environments. For example, rubber provides excellent flexibility and can be useful in situations requiring a durable outer layer, while polyethylene is often utilized for its low moisture absorption. Silicone is known for its high-temperature resistance but is not as commonly used as PVC in standard electrical insulation.