Awe man... you guys jinxed me...

[Magnum Man]

I came home today, with some new fish, and my big group of tanks, were dark, and silent... 10 minutes later, I think I have it isolated to a particular power strip... yes, I have 2 circuits, but 3/4 of these tanks, are one one circuit... now isolated to one power strip, and unless the breaker trips again, I think I have it isolated to a cheap submersible pump, to assist with water changes, in a 10 gallon, that is only 2 inches off the floor... hoping everyone is not fried... it's the tank that has my Cherries and high fin platy's

 

[Magnum Man]

well now I'm wondering if it's the breaker??? it's on of the originals, when the 100 year old house was switched from fuses, right now I have 3/4 of the power going through the 2nd breaker... funny, that I never tripped a break on the tanks before... I learned a lot about wiring ver the years, and even the newer circuits here, are 39 years old... when I wired the addition, all 5 circuits goes through the pantry area, so I have 5 available ground fault circuits, where we plug in roasters and crock pots for entertaining

 

[MaloK]

An old breaker that tripped a lot in his life becomes tired and will fail holding to normal use.

But Normally the protection on the power bar should trip first. These bars are grossly set to around 13 amps. This should leave 2 amps of play before reaching the breakers threshold.

Loading a breaker until it start to emit a little buzz, and they wont last long.

 

[Magnum Man]

I can't find anything specific, the breaker never tripped before, so I suspect it's the fault of the breaker... I have 3/4 of the power on the 2 nd breaker, and the problem breaker seems to be holding 1/4 of the power