> You will need 12/3 (which is 3 #12 wires & a separate ground) to run a > 220V circuit. > Black and Red for the Hot wires. White for the Neutral and the bare (or > Green) for the Ground. True, unless the device(s) connecting to the circuit utilize no neutral, in which case 12/2 w/GND is appropriate for a 20A circuit. Paul, W9AC