What important information is found on a motor nameplate?

Motor nameplates provide essential data: rated power (HP or kW), rated voltage (operating voltage), rated current (full load amps), frequency (50 or 60 Hz), speed (RPM), frame size (mounting dimensions), service factor (overload capability), efficiency class, insulation class (temperature rating), enclosure type (IP rating or NEMA designation), and duty cycle. This information is critical for proper motor selection, installation, protection, and replacement.