This column displays the motor's optimal voltage(s), along with other common operating voltages. ClearPath input voltage ranges: Fractional hp (NEMA 23/34): 24-75 VDC (90 VDC max) Integral hp (NEMA 56/143): 110VAC (single-phase), 190-240 VAC (single- or three-phase), or 300-415 VAC (3-phase, 5-wire) You can see how choosing a voltage other than that of the optimal …