We know its main "strengths" from its common name, and we sometimes refer to it as a current measuring clamp. It is an electrical instrument used to measure large currents. It can measure up to 1000 amperes of AC current, and can only measure a minimum of 1 ampere of current. No matter how low it is, it cannot be accurately measured. So its accuracy is only between 2.5 and 5 levels, and there are many things to pay attention to when measuring large currents that beginners need to remember.