Each disk of a porcelain or glass suspension insulator is rated at how many kV?

The correct answer is based on standard ratings for porcelain or glass suspension insulators, which are typically rated for 11 kV per disk. This rating is essential for electrical engineers and technicians when designing and maintaining power transmission lines, as it indicates the maximum voltage the insulator can safely handle before the risk of electrical breakdown or failure occurs.

Using insulators rated at 11 kV per disk allows for effective voltage management along transmission lines, helping to ensure safety and reliability in the electrical grid. It is common in practice to stack multiple disks together to achieve the desired voltage rating for different applications, while the 11 kV rating serves as a standard reference for individual disks. This standard is used globally to ensure consistency and interoperability between different systems and components in the power transmission industry.