Why is it important to measure insulation resistance?

Measuring insulation resistance is crucial for ensuring proper protection against potential electrical hazards. Insulation resistance tests are conducted to verify the integrity of the insulation material surrounding electrical conductors. This is important because failing insulation can lead to current leakage, which poses significant risks, including the potential for electric shock, equipment damage, and even fire hazards.

High insulation resistance values indicate that the insulation is functioning well and is capable of providing the necessary protection. Conversely, low insulation resistance values suggest deterioration or damage, which may require immediate attention to prevent unsafe conditions. By regularly measuring insulation resistance, linemen can identify and address issues before they escalate into more dangerous situations, thus enhancing safety for both personnel and the equipment involved.