What does an insulation tester primarily measure?

An insulation tester is specifically designed to measure the resistance of insulation in wiring. This is crucial for determining whether the insulation material is adequate to prevent electrical leakage or short circuits, which can lead to equipment failure or electrical hazards. The resistance measurement indicates the effectiveness of the insulating material in providing a safe barrier against electrical current, ensuring that it does not flow to unintended paths.

By assessing the resistance, users can identify potential problems in electrical systems, such as deterioration or damage to the insulation, allowing for proactive maintenance and safety checks. This is essential in various applications, including residential, commercial, and industrial electrical installations, to ensure safety and compliance with electrical standards.

While other devices may measure voltage levels, current flow, or power consumption, the insulation tester's primary function remains focused on evaluating the integrity of insulating materials within electrical systems. This targeted measurement helps ensure safe electrical operation and longevity of the equipment being tested.