Jim Baird Posted August 21, 2020 Report Share Posted August 21, 2020 Two panels in a little utility room off a carport, not heated or cooled. Both panels had rusty bus bars and terminal screws both sides. 30 yrs old. I have never seen the likes. Has anybody here? Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted August 21, 2020 Report Share Posted August 21, 2020 Looks like some kind of airborne contaminant. I see this kind of early stage corrosion from pool chlorine. Quote Link to comment Share on other sites More sharing options...
Marc Posted August 22, 2020 Report Share Posted August 22, 2020 (edited) Yeah, this morning on the neutral bus of an old FPE panel that had the neutral floating like a bird. Couldn't loosen a single one of them dang screws or lugs. Outdoor location though. A utility room off of a carport will have a wider range of moisture levels than outside. That's because of rapid temperature changes and little means for moisture to escape. That's not an unusual finding this close to the Louisiana Gulf Shore. Edited August 22, 2020 by Marc Quote Link to comment Share on other sites More sharing options...
Trent Tarter Posted August 22, 2020 Report Share Posted August 22, 2020 I have seen this many times over the years. Quote Link to comment Share on other sites More sharing options...
plummen Posted September 7, 2020 Report Share Posted September 7, 2020 High humidity? Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted September 7, 2020 Report Share Posted September 7, 2020 18 hours ago, plummen said: High humidity? We have tons of outdoor panels here in Oregon where there's plenty of high humidity for about half the year. But the only time I see corrosion like this is if the house is near the coast or if there's some kind of contaminant in the air. Quote Link to comment Share on other sites More sharing options...
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