current tends to travel along the outer surfaces of a conductor in a process known as skin effects. in large electric substations the high voltage buss work is sometimes hollow tubular bars so designed for that reason. electric transmission lines are made up of stranded aluminium conductors wrapped around a steel core. steel core for strength and wrapped stranded conductors for ampacity. large solid conductors imparts more resistance in the circuit, this combined with skin effects tends to restrict current flow. stranded conductors typically will have a higher ampacity due to their smaller individual size having less resistance and also each strand will have its own skin effect. there is some thoughts that stranded conductors have less heat dissipation which will serve to reduce current flow. now is it atom to atom or does each atom just bump into each successive atom to make current flow?
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Today's Featured Article - Harry Ferguson - The Man & The Machine Harry Ferguson was christened Henry George but every one called him Harry. Harry was born in a small Irish town called Growell in County Down about 16 miles from Belfast. Harry Ferguson led a varied and colorful childhood causing mischief where ever he could. He showed mechanical aptitude at a very early stage in life and showed no inclination towards
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