How do electricians find power leakages and where the problem is without breaking the wall? (I have one working on my house rn and he found the leakage with the power out)

Question

How do electricians find power leakages and where the problem is without breaking the wall? (I have one working on my house rn and he found the leakage with the power out)

In: Other

Answer 1

One of the tools is a meter that detects magnetic fields – electrical current creates a magnetic field, so you can use a sensitive detector to “trace” the energized wire. If it stops unexpectedly, you have likely found the break or “short”.