Who usually recommends 4A/mm? Using the wire parameter calculator below, a 2mm diameter wire is capable of carrying 20A, with a 0.1V drop over a 1m (3") cable.

Who usually recommends 4A/mm? Using the wire parameter calculator below, a 2mm diameter wire is capable of carrying 20A, with a 0.1V drop over a 1m (3") cable. A 2mm diameter stranded copper wire is not entirely unwieldy. http://circuitcalculator.com/wordpress/2007/09/20/wire-parameter-calculator/ http://circuitcalculator.com/wordpress/2007/09/20/wire-param...