My contractor seems to be creating energy from thin air. He uncovered some old wiring while replacing the ceiling plaster in my living room. I had him use this wiring to install low voltage can lights and they look great. As I was installing a smart switch, I was unable to locate a circuit breaker in my main panel that was powering these lights. We had a new main panel installed 7 years ago, could the old wiring have simply been missed when wiring the panel? Could it somehow be directly connected to the main line coming in the house and be unfused?