I have an old electrical panel. Some of the circuits were flickering. When I checked the breaker to the associated circuit I found that the bus bar had "porous" looking buildup of metal at the location. See photo showing two arced bus bar sections. I can also still hear some occasional tiny sizzling/arcing noises coming from the breakers but don't know which ones are making the noise.
Can the metal buildup be filed down to the bare metal making the slot reusable?
I saw a bus bar replacement at home depot for $60. Is it worth time and money to replace this or should I be looking for someone to replace/upgrade the entire panel?
The subpanel has the copper ground connecting to the ground bar in the main panel. Is this OK?
Any comments on the rest of the panel? It looks like someone added a transformer in there with wire nuts
Looking at the comments now I'm worried. How much should it cost to upgrade my old 100 AMP to a new 200 AMP main?
If I put a new box in, how do you extend any short wires? wire nuts? a junction box under the house in the crawl space?
Thanks