Voltage Lab

Q: What does NEMA stand for?

National Electric Manufacturers Association

Q: What does the motor's horsepower (HP) rating indicate?

The motor's mechanical power output

Q: What does the 'Locked Rotor Code Letter' on a motor nameplate indicate?

The inrush current during startup

Q: What information does the nameplate provide about the motor's voltage?

The rated operating voltage, including dual-voltage options

Q: What is the primary function of the 'Full Load Amps' (FLA) value on a motor nameplate?

To size circuit breakers, fuses, and wiring

Q: What does the 'Phase' designation indicate on a motor nameplate?

Whether the motor is single-phase or three-phase

Q: Where can the motor's model or catalog number typically be found?

On the manufacturer's nameplate

Q: What does the service factor (SF) represent?

The amount the motor can be overloaded for a short time

Q: What does the locked rotor kVA/HP represent?

The inrush current during startup per horsepower

Q: What is the primary purpose of the motor nameplate?

To help in selecting, installing, and maintaining the motor.

Question 1 of 15

What does NEMA stand for?

NEMA is the National Electrical Manufacturers Association.

Question 2 of 15

What does the motor's horsepower (HP) rating indicate?

Horsepower indicates the mechanical power output of the motor.

Question 3 of 15

What unit is equivalent to one horsepower?

One horsepower is equal to 746 watts.

Question 4 of 15

What does FLA stand for on a motor nameplate?

FLA stands for Full Load Amps.

Question 5 of 15

What does the 'Locked Rotor Code Letter' on a motor nameplate indicate?

The Locked Rotor Code Letter indicates the inrush current during motor startup.

Question 6 of 15

What is the typical frequency in North America for electric motors?

The typical frequency in North America is 60 Hz.

Question 7 of 15

What information does the nameplate provide about the motor's voltage?

The nameplate specifies the rated operating voltage, including multiple voltage options if applicable.

Question 8 of 15

What is the primary function of the 'Full Load Amps' (FLA) value on a motor nameplate?

The FLA value is essential for sizing circuit protection and wiring.

Question 9 of 15

What does the 'Phase' designation indicate on a motor nameplate?

The 'Phase' specifies whether the motor is single-phase or three-phase.

Question 10 of 15

What does 'RPM' stand for in the context of motor nameplates?

RPM stands for Revolutions Per Minute.

Question 11 of 15

Where can the motor's model or catalog number typically be found?

The manufacturer's model or catalog number is found on the nameplate.

Question 12 of 15

What does the service factor (SF) represent?

The service factor indicates the amount the motor can be overloaded for a short time.

Question 13 of 15

Which NEMA standard defines enclosure protection ratings?

NEMA 250 defines enclosure protection ratings.

Question 14 of 15

What does the locked rotor kVA/HP represent?

Locked rotor kVA/HP represents the inrush current during startup per horsepower.

Question 15 of 15

What is the primary purpose of the motor nameplate?

The motor nameplate provides crucial information for selecting, installing, and maintaining the motor.

Motor Nameplate Decoding