Siemens BAF2 20 amp tripping

[RRJ]

.

Whatever they did here there is another panel upstairs where 5 of this breakers are tripping. This two panels are fed from same breaker. It trips once every week and I have no idea what to do with this. The electrical contractor left me this mess.


Sent from my iPhone using Tapatalk

 

[RRJ]

These were the breakers they move to bottom of panel and I took them completely out and blank those spaces. They could figure out the nuisance tripping so the GcC changed a refrigerator and move breakers around but those spaces still tripping mainly A and B phase on the odd side of panel. I got another electrical contractor coming to check the insulation on the feeder.


Sent from my iPhone using Tapatalk

 

[LarryFine]

Are you showing us overheated breaker tabs? If so, the screw holes in the bus may be stripped. That's what the extra screws suggest.

 

[hillbilly1]

Probably cross threaded from trying to install them to a live buss. They don’t tighten down. Busted more than one of my guys doing that!

 

[RRJ]

This is a brand new freaking panel and now I’m having 6 or 7 breakers tripping upstairs on a panel tight up to the one on picture. I checked for shared neutrals and resistance on branch circuits. I don’t know what else to do.


Sent from my iPhone using Tapatalk

 

[LarryFine]

IR camera. If they're new and came assembled, call the supplier.

 

[hillbilly1]

I did some troubleshooting on an assisted living home years ago, when arc fault just came out. 42 circuit panels full of arc fault breakers. Random tripping.The panel was hot to touch with virtually no load at all. Siemens recalled all the breakers and paid us to replace them. But I don’t see any arc faults in your pictures, so that’s not it. I think they assemble those in Mexico, so it may have been siesta time when they built it! LOL!