I'm not an electrician, but usually a capable homeowner for troubleshooting my own electrical issues.
My issue is that I have a 15amp lighting circuit where all legs are currently down. Started a few days ago. I have a bunch of Lutron Caseta switches on these legs and figured maybe they all got fried with a surge or something..
So, I pulled one of the switches off in my dining room and touched my line and load wires together expecting to see my lights come on. They did not.
Since all legs are down, my next thought was the breaker went bad. It happens. Replaced the breaker. No lights.
Next I broke out the multimeter. Measured directly off my breaker and I have 120v. Put the old breaker back in and the same thing. 120v off the breaker.
Went back to the exposed switch and got a baffling 10-60v. Some quick searching, I read that digital meters can sometimes read "ghost voltage" and only work reliably when there is load. Not sure if this is true, but I turned the breaker off and measured 0v. So it seemed like something was coming through based on the breaker being on.
Perhaps that test doesn't prove anything (I don't know), but this issue is now past my homeowner range of knowledge.
Any ideas of what is going on? What else could cause all legs of my circuit to be down when I'm getting 120v off the breaker? This just started a few days ago and there has been no electrical work of any kind in months/years.