This appears to be a 3 phase motor with all 12 leads exposed at the terminals for the purpose of dual voltage connection and star-delta starting. Depending on the voltage you have measured in the first step, you should select the appropriate diagram. But sometimes when you open up a motor, there's just six wires and no diagram! I have found that most dual-voltage motors have a wiring diagram located on it somewhere. Dual Voltage Single Phase Motor Wiring Diagram– wiring diagram is a simplified up to standard pictorial representation of an electrical circuit.It shows the components of the circuit as simplified shapes, and the skill and signal contacts in the company of the devices. Motor Wiring Diagram U.S. ELECTRICAL MOTORS 12 Lead, Dual Voltage, Wye Start/Delta Run, Both Voltages or 6 Lead, Single Voltage, Wye Start/Delta Run Motors designed by US Motors for Wye Start, Delta Run may also be used for across the line starting using only the Delta connection. The reason why motor manufacture design dual voltage is to make this motor available for any country used because every country have a different voltage value such as 200 VAC,600 VAC and 415 VAC.It also so for marketing strategy to increase their profit margin. SINGLE-PHASE MOTORS . It shows the components of the circuit as streamlined shapes, and also the power and also signal connections in between the devices. If it does not have a label diagram for wiring changes, then it probably is not a dual-voltage motor. A wiring diagram is a streamlined standard pictorial depiction of an electric circuit. for where I moved it to. Winding B is wire 3 to wire 4. The best way to change the voltage on a motor is to follow the wiring diagram on the label. A. DUAL VOLTAGE . www.leeson.com Single Phase Connections: (Three Phase--see below) Single Voltage: 20 years ago I wired it to 240 volts, but I wanted to switch it back to 120 volts. Replace the cover on the motor and turn on the power. So, the wiring for this type of motor is as follows main winding A is wire 1 to 2. Start cap circuit begins on wire 5 (cap), the other side of the cap goes to the start switch, the other side of the start switch goes to the start winding and wire 8 is the other end of the start winding. Regardless of type, when a single-phase motor is reconnectible series-parallel for dual voltage, the terminal marking shall be determined as follows:* For the purpose of assigning terminal markings, the main winding is assumed to be divided into Collection of leeson electric motor wiring diagram. This happened to be the case for the 1.5 hp motor on my old table saw . Sometimes in plain view, such as a plate or sticker mounted externally, or sometimes on a label or sticker underneath an access panel for the wires. The only weird thing at play here is the wonky layout and nomenclature. 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