Insulation Resistance Testing is a method used to measure the resistance of electrical insulation in cables, motors, and other equipment. This test helps ensure that the insulation is intact and functioning properly, preventing electrical leaks that could lead to equipment failure or safety hazards. A specialized device, called an insulation resistance tester, applies a high voltage to the insulation and measures the resulting current flow. The results of the test are expressed in ohms, with higher values indicating better insulation quality. Regular insulation resistance testing is essential for maintaining the safety and reliability of electrical systems, especially in industrial and commercial settings.