What occurs if more than one conductor is measured using a clamp-on meter?

Using a clamp-on meter to measure the current of more than one conductor simultaneously leads to incorrect readings because the meter is designed to measure the net current flowing through a single conductor. The clamp works by measuring the magnetic field generated by the current within that one conductor. When multiple conductors are present within the clamp, the magnetic fields from those conductors may cancel each other out or combine in unexpected ways, leading to a reading that does not accurately reflect the current of any individual conductor.

In scenarios where you have multiple conductors, it is crucial to measure each one separately to obtain accurate current readings. This ensures that the meter's reading reflects the actual flow of current within that specific conductor, free from interference caused by adjacent currents. Therefore, attempting to measure multiple conductors at once compromises the effectiveness of the clamp-on meter, resulting in an inaccurate reading.