Ever wonder how lamps stay "warmed up" for instant-on when the circuit is "off?"
I have had some problems with certain motion sensors, fhoto cells, and timers as well. The one thing these all had in common were electronic components.
My own pet theory is that these electronics use the ground path as a "neutral" and operate off the tiny voltage differences between the real neutral and the ground. I can't see how else they operate when the "hot" is turned off.
