Typical Name Plate of an AC Induction Motor
A typical name plate on an AC induction motor is shown below. Generally the name tag includes: type, horsepower (H.P.), amps, volts, hertz, rpm...
Typical name plate on AC motor: 
Below I explain these parameters of the typical name tag on ac induction motor.
Volts: Rated terminal supply voltage.
Amps: Rated full-load supply current.
H.P.: Rated motor output.
R.P.M: Rated full-load speed of the motor.
Hertz: Rated supply frequency.
Frame: External physical dimension of the motor based on the NEMA standards.
Duty: Motor load condition, whether it is continuos load, short time, periodic, etc.
Date: Date of manufacturing.
Class Insulation: Insulation class used for the motor construction. This specifies max. limit of the motor winding temperature.
NEMA Design: This specifies to which NEMA design class the motor belongs to.
Service Factor: Factor by which the motor can be overloaded beyond the full load.
NEMA Nom. Efficiency: Motor operating efficiency at full load.
PH: Specifies number of stator phases of the motor.
Pole: Specifies number of poles of the motor.
Y: Specifies whether the ac motor windings are start (Y) connected or delta (Δ) connected.
