My panel is a 120/240 single phase 2 hots (120 to neutral or ground one side the other is also 120 to neutral or ground or 240 hot to hot) what I did is hooked 2 wires on seperate 20 amp single pole on one side of my 120/240 and 1 wire on a seperate 20 amp breaker on the other side and used my neutral for all three hots