Originally Posted by c0mfortably_numb
Also I don't get why they don't like stranded cable, the Belden I have is stranded but really thick copper (need gloves to twist the cable, unless you like bloody fingers) I can't see a more expensive solid core cable making much more of a difference.
Actually, really thick cable is pointless. The current density concentrated on the surface of the conductor (skin effect). The question is how deep is this skin. At low frequency (AC), the depth can be quite deep. Someone else might want to calculate this. But that depth is finite, at some point the center core of the cable will not conduct any current.