I was sure the neutral bar in that old Cutler-Hammer panel was fine, but a flickering light told a different story
For years, I'd see those older panels and think the neutral bar was just a solid piece of metal, so it couldn't really fail. Then last month in a 1970s house in Springfield, a dining room light kept dimming and I finally pulled the meter. The bar had a hairline crack you could barely see, and it was heating up enough to discolor the insulation on three wires. It matters because that's a slow burn waiting to happen, not just a nuisance flicker. Has anyone else caught a failing neutral bar that looked perfectly good from the front?