A Humbling Post here:
I go years without popping a breaker and then I pop 2 different ones in one day - both of which were my own fault.
1 - Cleaning the garage the day after Thanksgiving. It's a bit cool out, so I plug in the electric heater. There's also a freezer in the garage and 3 light fixtures. Everything is fine all day and I'm nice and toasty. Then 5 PM hits, the timer for the Christmas lights turns on and suddenly I'm standing in the dark. Oh well, almost done, I'll live without the heater.2 - I need another shelf in the garage so I grab a piece of scrap and head down to the shop. I keep the table saw on a rolling base, pulling it away from the wall when I need to use it. I pull it out, make 1 cut and start another one when I see sparks by the motor and the saw stops. Damn! Did I blow the motor?
Nah. In my haste, I hooked the power cord for the drill press with the table saw's belt cover when I rolled it out. Everything is black on that part of the saw and there's a black cord from the switch to the motor in that area, so I just didn't see the extra cord - it all just blended in.
I was fine for one cut, but halfway through second cut the belt wore through the drill press power cord and shorted it out, blowing the breaker.
Learnings: Haste makes waste, at least 2 of my breakers work fine, the garage needs another circuit.