Todays inspection showed rust in the panel box. There was also a rust covering on the lugs of several breakers and the throw lever locking bar on the four main breakers. The service line did not have any indication of moisture coming in from there.
Some of the breakers had been replaced, evidenced by shiny lug screws. Would some of this rusting occur if there was fairly active moisture in the basement? should all the breakers be replaced?