To test the isolation of cables in Pakistan, you can use a device called a cable fault locator. This device is designed to identify any faults or weaknesses in cables in Pakistan by measuring the insulation resistance between the conductors. To perform the test, the cable must be disconnected from any power source and the ends of the cable must be connected to the fault locator. The device will then send a signal through the cable and measure the resistance to determine if there are any faults present. It's important to regularly test the isolation of cables in Pakistan to ensure that they are safe and reliable for use. By using a cable fault locator, you can quickly identify any issues with your cables in Pakistan and take the necessary steps to address them.