3-Phase Motor Wiring Infographic

3-phase motors are the most common motors used to drive heavy loads in most factory automation settings. These motors can be found with a variety of wiring styles, anywhere between 3 and 12 wires, with 9-wire motors being the most common.

Figure 1. 3-phase motor wiring diagrams of 3-wire, 6-wire, 9-wire, and 12-wire motors. Click on the image to see a high-res (printable 11x17 size) version.

Are you a motor troubleshooting expert? Quiz yourself with our (no pressure) worksheet!

Interested in content about motors? We have plenty to choose from!

Articles:

• 3-phase Motor Types: Synchronous and Induction Motors
• Understanding Delta Wound Motors for Industrial Applications
• Common Motor Windings and Wiring for Three-Phase Motors
• Brushed vs. Brushless DC Motors
• Field-oriented Control (Vector Control) for Brushless DC Motors
• Teardown: What’s Inside a 3-Phase Induction Motor?

Textbook:

• Rotating Magnetic Fields in Three-phase AC Induction Motors
• VSD and VFD Motor Drive Features