I have a mwbc where one is running my kitchen outlets, and the other is running a dedicated circuit for the disposal. the breakers are adjacent in the panel, so they are on opposite phase and share a common neutral and ground. I was updating the outlets and so turned off only one of the breakers. when I tested the line to make sure it was off, my voltmeter still read about 10 volts. Is this normal? there were no appliances connected to either circuit.