On Saturday, January 7, 2017 at 11:21:52 PM UTC-5, isw wrote:
In article ,
" wrote:

On Friday, January 6, 2017 at 9:52:54 AM UTC-5, wrote:

SNIPPAGE

a) Wire conductivity, irrespective of material, is a function of surface area
and gauge amongst other factors.

It's mostly a function of cross-section area at DC. As frequency rises
and skin effect begins to be important, surface area starts to matter,
so more, finer strands might be better, *but only if the individual
strands are insulated from each other*.

Isaac

explain cross section electron availability for an aluminum/silver/copper wire or aluminum/copper where cladding cross section is thin ?