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Engineering
Electrical Engineering
Insulated copper wire turned into gray powder
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[QUOTE="Majorana, post: 6231500, member: 583529"] I beg you pardon for NOT posting more photos, I have some problem with my camera (have not yet fully learned how to use the d@mn thing!) but will try to post a "picture in words". I cut open (longitudinally) three sections of red cable between swollen spots, and the copper strands are undamaged: corrosion - or whatever kind of degenerative process it is - only and neatly takes places in those 8-10mm spots. The second thing I discovered was ONE, and only one, corrosion spot on the BLACK-insulated cable. It was very difficult to see because the swelling, that is already small on the red cable (slightly more than 0.5 mm in diameter increase) was even smaller on the black cable, almost not noticeable, so it escaped detection until now. Important note: that single swelling on the black cable was exactly in correspondence with a swelling on the red cable. [/QUOTE]
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Insulated copper wire turned into gray powder
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