Just finishing up my install (actually waiting on a single CT) but anyhow I left the service panel open while I confirmed all of my CTs are in fact connected and working properly.
Course about an hour after i buttoned it up I was near the panel updating the labels and for a few seconds I heard a chattering/vibration coming from the panel.
Thinking it was a CT whose jack might of come loose and was causing a CT to saturate I double check all the jacks and they were good. So I then opened the panel back up and checked that the CTs were all clamped correctly and they were.
Any clues to the cause of the noise?