What is the primary purpose of electrical insulation?

The primary purpose of electrical insulation is to prevent electrical shock. Insulation serves as a protective barrier between energized electrical components and individuals or equipment that may come into contact with them. By effectively isolating these conductive parts, insulation ensures that electricity does not flow where it shouldn't, thereby safeguarding people from potentially dangerous electric currents that could cause injury or even be fatal.

While reducing arc flash risk and enhancing energy efficiency are important considerations in electrical systems, they stem from the use and effectiveness of insulation rather than being its primary purpose. Similarly, improving conductivity runs counter to the function of insulation, which is designed to resist electrical flow rather than facilitate it.