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  • It's called 6-gauge here, and used to make sure things are grounded so thoroughly they can take any electrical load they're likely to encounter. I guess I was writing for an American audience. It's a soft copper wire, about 4 mm in diameter. If the copper isn't soft enough, heat it red-hot and quench it in water. The same goes for silver or brass. You don't want it glowing brightly, but you should be able to see a bit of a glow.The nice thing about the copper wire is that if it's soft, you don't need to heat it to work it. Silver and brass, you do.Dr.Ellen

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