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How to Wire a Two-Speed Baldor Motor

Baldor motors are sold across the United States. These motors come in a number of different power and wiring configurations. One of the most common motors used is the two-speed model. Baldor motors use a Wye or Delta wiring configuration to achieve different operating characteristics. These characteristics include constant horsepower, constant torque and variable torque. Depending on your needs, thee is a motor that can handle the load. Wiring one of these two-speed models is different, depending on which characteristic is needed.

Things You'll Need

Jumper wires
Wire strippers
Wire cutters
Motor documentation

Instructions

- 1
  Verify that the power circuit that will feed the motor is off at the main power panel and all emergency disconnect switches. Check the motor documentation to see which type of motor you have and how it should be wired. Look at the pin terminals on the motor. The pins will be numbered either 1, 2, 3, 4, 5, 6 or 1, 2, 3, 11, 12, 13. In both cases, connect the red, black and white wire of the main power wire to terminals 1, 2 and 3, respectively, for low speed.
- 2
  Wire the red, black and white power wires to pins 4, 5 and 6 for high speed if the motor uses a Delta wiring configuration. If the motor uses a Wye wiring configuration, pins 1, 2 and 3 must be connected together using jumper wires.
- 3
  Verify Step 2 with the wiring instructions that come with the motor. Baldor has another Wye-configured two-speed motor that does not require that pins 1, 2 and 3 be connected together. Double-check all wiring before applying power to these motors. That can help avoid costly mistakes. Turn the power back on and test-start the motor.

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