Of course I do...but I guess I call folks a "colleague" when I respect their opinion and experience as well!

 

I stand corrected by the more modern learned. I can't recall for sure, it was so long ago, but it may be that my physics texts were chiseled in stone tablets (I do remember they were that heavy to carry!) so it's likely the info is "ancient history".
Here's a brain teaser to ponder then, a public explanation is not required. Why then do we use stranded wire for low voltage DC wiring and solid wire for high voltage (60 Hz = high freq.?) AC? Wouldn't modern skin effect theory say it should be the other way around?

 

60 Hz is not high frequency. 60 Khz is not high frequency. 60 Mhz is high frequency. We use stranded wire for dc because it is more flexible and less subject to breaking with vibration & repetitive movement. (I've seen 00 cable thats as limp and flexible as a wet noodle. It consists of hundreds of smaller strands of wire). And there is a lot of 60 Hz wire that is stranded. Entrance cable, anything over #10 is usually stranded.



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