I have one of these little clamp meters,  or at least a re-badge of the same design and after a rather silly  experiment with a DC welder supply I need to do something to degauss the poles, as the zero offset is a bit poor, but perfectly fine for differential tests. Certainly  for following L-N imbalances and 10mA or so sort of currents walking off down the antenna cable and so on it is very handy. Can also be used to pair up singles - where you have a tangle of neutrals and do not wish to cut the wrong one - the one that reads the same as the live circuit you are about to isolate and work on is the right one. Even if it cannot narrow it down to one, it gets you to a much reduced range of search.

I have one of these little clamp meters,  or at least a re-badge of the same design and after a rather silly  experiment with a DC welder supply I need to do something to degauss the poles, as the zero offset is a bit poor, but perfectly fine for differential tests. Certainly  for following L-N imbalances and 10mA or so sort of currents walking off down the antenna cable and so on it is very handy. Can also be used to pair up singles - where you have a tangle of neutrals and do not wish to cut the wrong one - the one that reads the same as the live circuit you are about to isolate and work on is the right one. Even if it cannot narrow it down to one, it gets you to a much reduced range of search.