Re: Faulty breaker or other cause?
Postscript: I was on the phone
having a long conversation and picked up the old breaker and was absently playing with it in my free hand, repeatedly flipping the toggle. As I ended the call I realized the switch was staying on after all that “exercising”. Contaminated toggle that cleaned itself? Who knows. While I won’t count on it as a primary backup I’m not going to throw it out. Returning it for exchange would not be worth the trouble as they are $15 online.
"Having a yacht is reason for being more cheerful than most." -Kurt Vonnegut