Phase Neutral Interchange

Some of the consumers will interchange the phase and the neutral wire to stop the energy meter reading the energy consumption. This type of tampering can be sensed by using Analog frontend or Active layer protection. As the consumer is attempting to change the phase and neutral wire, there will occur some mismatch in the PCB track of the energy meter. Hence, this can be detected as tamper action by the SAM L22 using the Active layer protection feature.