What is the typical measurement for insulation resistance in a healthy system?

In a healthy electrical system, the typical measurement for insulation resistance is generally greater than 1 MΩ. This benchmark is widely accepted in the industry as it indicates good insulation integrity and minimal leakage current. Proper insulation resistance ensures that the electrical system operates safely and effectively, preventing issues such as short circuits or equipment failure.

A measurement below 1 MΩ may suggest potential insulation problems, which could lead to more serious electrical issues over time. While values exceeding 1 MΩ are desirable, significantly higher readings can indicate excellent insulation health. Therefore, the general rule of thumb is to aim for values greater than 1 MΩ as a standard for evaluating system condition.