When my car battery died, my son came over to give me a jump. The jumper cables looked rather small, maybe 5/16 inch, including insulation. He got them from a website that sells close-outs and features only one item per day. Well, I hooked them up -- no spark. I found that to be a bit odd, so I left them on for a while, but the battery did not charge. I disconnected the cables and measured the voltage at the clips -- 12V. I figured there must be a high-resistance contact somewhere.
Later, after other cables got my car started, I did a post-mortem. I examined one of the wire crimps, and it looked like only a few strands were crimped and the rest must have been cut off by mistake. Not so! After cutting off the alligator clip, I noticed that the cable was almost all plastic, with just a tiny core of copper -- maybe #22 AWG. This is not good enough for lamp cord, but maybe speaker wire. Who makes jumper cables out of such thin wire? Monkeys!
This entry was submitted by Noor Singh Khalsa and edited by Rob Spiegel.
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