I have a Federal Pacific breaker box. I saw some posts indicating that such panels are of low quality. It sounds like I should replace everything; I will try to get going on that.
What would make one of the hot legs on the main breaker burn and get brittle? This is coming from meter glass to the panel. The other side of breaker that feeds the house looks good, no obvious damage.
Why didn't the breaker blow? Does it only protect the house side? The house is the only house being fed off the transformer. Could it have been lightning or a power surge from power lines?