Are you dealing with all like materials,if not then electrolisis is probably at play.If it is like materials what is the atmosphere,may need a heater to hold down moisture(humidity),f it is a corrosive atmosphere then just good maintenance is key,,lots of culprits in the possible scenario.
dick
Outdoor 3R switchboard... about 5 miles from the ocean in southern California and about 3 years old. I don't know of many installations (only one that I can think of) with heaters in this climate. And I've never noticed this corrosion in other installations.
The heaters are to prevent condensation from occuring, and only need to keep the inside of the enclosure 1 degree warmer than outside. Has nothing to do with climate, those cold damp Sol Cal mornings are perfect conditions for this to occur.
In my past edjumication I learned that the strip heaters are to keep the interior above the dew point. But other (older) switchboards at the same location do not have this corrosion...
Outdoor 3R switchboard... about 5 miles from the ocean in southern California and about 3 years old. I don't know of many installations (only one that I can think of) with heaters in this climate. And I've never noticed this corrosion in other installations. Thanks.
Dissimilar metals shouldn't affect wire terminated in lugs listed for the use, and for relatively long lengths of exposed buss and copper wire... ?
What does the length have to do with it?
dick