A system includes a plurality of sensors configured to detect an electrical voltage and an electrical leakage current associated with an operation of an industrial machine, and a controller including a processor and a selection device. The selection device is configured to receive from the plurality of sensors a first input corresponding to the electrical voltage, and a second input corresponding to the electrical leakage current. The first input is paired with the second input to generate a paired input. The selection device is configured to transmit an output to the processor based at least in part on the paired input. The output includes an indication of the electrical leakage current or a dissipation factor associated with the industrial machine.