240v - What's the difference between three phase 240 V and I don't understand the difference between household 240 and 3 phase 240. Isn't household 240 just What's the difference between three phase 240 V and standard voltage, 2 phase uses line voltage, split phase uses 2 lines, a neutral and usually a capacitor to simulate a third phase (it's a method of motor wiring) It is possible Three-Phase Wiring Diagrams PDF fileThree-Phase Wiring Diagrams ALWAYS USE WIRING DIAGRAM SUPPLIED ON MOTOR NAMEPLATE - colored leads are only applicable on the NEW ROLLED STEEL motor lines - Single-Phase Wiring Diagrams ALWAYS USE WIRING DIAGRAM SUPPLIED ON MOTOR NAMEPLATE FOR MOTORS WITH THERMAL PROTECTION 480v to 240v Transformer Wiring Diagram | Free Wiring Diagram 480v to 240v Transformer Wiring Diagram - Collections Of 480 Volt to 120 Volt Transformer Wiring Diagram Image. 480v 3 Phase Transformer Wiring Diagram Step Down Tags to 120v. Step Down Transformer 480v 120v Wiring Diagram Trusted Wiring. 480v to 120v Transformer Wiring Diagram Elegant 3 Phase Step Down.