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diy solar

Cleaning terminals?

Sojourner1

Itinerant
Joined
Sep 30, 2019
Messages
762
Location
USA
Is just using some fine emory paper enough for cleaning the terminal connection?

It's been near 4 years that I've been using the system every day without a hick up. The first string of 5 EMS Sense Boards stop communicating with the CPU.
Looks like these, 4 per string daisy chained to make up 20 on the cells.
20180426_114606-1238x1651.jpg
I've moved a cable/ some wires around so I have power again but no cell protection, I'm not worried about using it for a couple weeks like this after living off the system everyday prior.
20191103_043331-1158x1158.jpg

So when I replace the string I figured to clean everything up even though it looks clean, it can't hurt while it's apart.
 
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