General Purpose Motor Three Phase Motor Design 3-Phase 20 HP Nameplate RPM 3 600 No of Speeds 1 Voltage 208-230/460V AC Full Load Amps 53.0-47.0/23.4 A 256TC Frame Hz 60/50 Hz Motor Service Factor 1.25 Max Ambient Temp 104 Degrees F Motor Thermal Protection None Duty Cycle Continuous Ins. Class F NEMA Design B Motor Enclosure Design Totally Enclosed Fan-Cooled Motor Shaft Rotation CW/CCW Motor Mounting Type Face Motor Mounting Position Horizontal or Vertical Shaft Down