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Old 09-27-2015, 07:34 PM   #5
twistedtree
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City: Vermont
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I'm not sure what's in the 303 spray, but the right thing to put on the contacts is dielectric grease which is just silicon grease. If that's whats in 303, then it should be fine too.

I think you just need to view the plus ends as consumables that will last about 5 years, then need replacing. On 50A cords it makes sense to cut off the ends and install a new plug. The plug end is about $100 vs $500-$700 fro a whole cord. The cable itself will last a very long time. On 30A cords it's probably more economical to replace the whole cord since they only cost about $100 for the whole thing.
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