Originally Posted by btrayfors
1. in a DC circuit current (electrons) flow throughout the wire, not just on the surface. This is not a radio frequency circuit.
I do like to see credible refferences for bold statments.
a. wire manufactures show the same rating for stranded and solid wire of the same guage.
b. stranded wire is thicker for any given guage, to get thesame cross sectional area.
Higher frequencies are different, but this is DC. Even at 60hz the skin effec thickness doesn't matter for cables under 1/2-inch.
American Wire Gauge table and AWG Electrical Current Load Limits with skin depth frequencies
Skin effect - Wikipedia, the free encyclopedia
For practical purposes, urban legend started by folks trying to sell monster audio cables.