What type of electrical tape is used to provide a protective overwrap for high-voltage cable?

High-temperature silicone rubber tape is appropriate for providing a protective overwrap for high-voltage cables due to its excellent insulation properties and ability to withstand extreme temperatures. This type of tape not only offers electrical insulation but also provides mechanical protection, making it suitable for environments where heat and high voltage are present.

Silicone rubber tape adheres to itself when stretched and wrapped, creating a secure and watertight seal, which is essential for the durability of the cable protection in high-voltage applications. Its flexibility enables it to conform to the wire's shape, ensuring comprehensive coverage and reducing the risk of wear and tear from environmental factors such as moisture or extreme temperatures.

While other types of tape, such as vinyl electrical tape, polyester tape, and foil tape, serve specific purposes in electrical work, they do not offer the same level of protection or heat resistance that silicone rubber tape provides, particularly for high-voltage applications. Hence, silicone rubber tape is the preferred choice for ensuring the safety and longevity of high-voltage cable systems.