Another thing I noticed today, with the switch to the lights turned off I am still getting 0.5 to 5 volts showing on the circuit. They are Lutron 1000 watt dimmers. I had to install 4 more cans today, I left the breaker on but turned the switch off and checked the voltage before I cut the wire, it was rangging from 0.5 to 5 volts, when I cut the wire it tripped the GFCI circuit breaker. Is this normal?