In the photo, this product is the one below. As you can see the top solar panel connection kit is much smaller in diameter. They're both marked 10AWG/6mm, but as you can see the adapter cord is much smaller than this extension cord that powers it. So it looks like the wires in the connection kit are somewhat suppressing the current coming from the larger wire. In real life it looks twice as big. So even though they have the same rating I'm returning that and getting the 12awg version for the adapter. At least it doesn't look weird.
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