The answer to 'how to test electrical meter' is to use a multimeter to check the voltage, current, and resistance of your electrical system. First, make sure the multimeter is set to the correct mode (voltage, current, or resistance) and range. Then, carefully touch the multimeter probes to the terminals or connections you want to test, following all safety precautions. This will allow you to verify the electrical readings and identify any issues with your meter or wiring.
It's important to test your electrical meter regularly, such as once a year or if you notice any issues with your power supply. If you're not comfortable working with electricity or don't have the right tools, it's best to call a licensed electrician to inspect and test your electrical system.