Agent 86 wrote:

Skin effect isn't an issue.

But I wouldn't consider 4 strands to be a *real* stranded cable. When
you've only got 4 strands bundled together, you've got a pretty high
percentage of air to copper. And air's not a particularly good conductor.

Pretty high percentage of air to copper? What does this mean? And there
would be nothing wrong with 1 strand!