A non-AFCI/non-GFCI circuit breaker tripped while I was away for a week. Connected were a full size residential in the U.S. (18 year old) refrigerator, 2 powered off computers, and 1 powered on computer.
I attempted to reset the breaker and it immediately tripped again. I could see a small spark in the breaker panel when I tried the reset.
I then unplugged the refrigerator and the 2 powered off computers (I didn't realize the 3rd computer was on this circuit) and reset the breaker again. It held this time.
My refrigerator and 2 previously powered off computers now work fine. The power supply on the previously running computer no longer functions.
I haven't previously seen a computer power supply on an idling computer trip a 20 amp circuit breaker. Besides loading my refrigerator with food and waiting for this circuit to trip again, is there anything else I can do to check the computers and refrigerator? I already pulled the outlet covers and things look ok.
Refrigerator: Whirlpool ED25TEXHW00 Computer that was powered on: 600 watt power supply but probably only drawing 100 watts while I was away
Additional: The 2 computers that survived were on a surge suppressor power strip. The 1 that died was not. The house is on a whole house surge suppressor.