Are you using 0g XLR cables? NO. Are CAT6 ethernet cables built from 8g? NO. Are USB cables as big as my arm? NO. You’re proving my point, not refuting it! You can jam crazy high alternating voltages down a thin conductor with negligible impedance, and it’s generally preferable to do so. That’s why utility companies do it.
As for your calculator... Learn how to read it. You’re looking at the wrong value. You’re quoting the skin depth impedance, not the full diameter impedance. It’s pretty freaking obvious. That’s why the number you quote is such a small figure and hardly changes with length.
Read this: https://www.passdiy.com/project/articles/speaker-cables
Nelson Pass did the measurements and they’re not even close to the stuff you’re saying. I’m going to trust his actual measurements a little bit more than your misinterpreted internet calculator speculation.
As for your calculator... Learn how to read it. You’re looking at the wrong value. You’re quoting the skin depth impedance, not the full diameter impedance. It’s pretty freaking obvious. That’s why the number you quote is such a small figure and hardly changes with length.
Read this: https://www.passdiy.com/project/articles/speaker-cables
Nelson Pass did the measurements and they’re not even close to the stuff you’re saying. I’m going to trust his actual measurements a little bit more than your misinterpreted internet calculator speculation.

