Quote Originally Posted by skids72
I would stay away from the solid copper... current flows more along the surface of the "wire" especially high frequencies (spark draw). With a solid bar the total surface area of the "skin-depth" is small compared to stranded wire (each strand carries the same "skin-depth" area). Full disclosure, I'm using #1 automotive wire but it's been recommended to me locally to use 2/0 welding cable for it's lower resistance and more importantly, it's flexibility makes it easier to work with. My wiring is a mess and I may go this route at the end of the season...

Two cents,

Chris
This would only be of concern in AC (60 Hz and higher) or transient DC circuits (pulsed alternators or railguns for example) and not really applicable to automotive DC circuits at all. "Skin Depth" is proportional to 1 over the square root of the product of pi, electrical frequency, conductivity, and permeability. Essentially in a DC circuit the electrical frequency is 0 and thus the skin depth tends towards infinity. Any electrical transients resulting in temporary skin effects are not of concern in automotive applications.

Check out the 1/0 Taylor welding/battery cables. IMO they are the best ..........

Kitz