An electrical meter with integral AC current clamp is known as a cinch meter, clamp on ammeter or tong analyzer. A clamp meter estimates the vector whole of the streams streaming in every one of the conductors going through the test, which relies upon the stage relationship of the flows. Just a single conductor is ordinarily gone through the test. Specifically, if the brace is shut around a two-conductor link conveying capacity to gear, similar current streams down one conductor and up the other; the meter accurately peruses a net current of zero