On Aug 1, 12:48*am, Higgs Boson wrote:
Lately, one circuit on my box blows. *It covers the microwave and
regular oven. *I could
understand it blowing when another heat-using appliance, like toaster
oven or toaster *runs at same time as microwave. *But now it's blowing
all on its own.

*Last time, today, only the micro was being used, to "reduce" *a glass
dish of chicken drippings.

Can one circuit go bad all on its own? *If so, why? *And what should I
do about it.

Any info appreciated.

As others have said, probably a bad breaker.

Quick test: Plug the microwave into another circuit and use it as
normal.