12 Leads Terminal Wiring Guide for Dual Voltage Delta Connected AC Induction Motor

The previous article presented the terminal wiring connection for a 12 leads star (wye) configured induction motor. Another type of 12 leads wiring configuration which is a distinguished counterpart to the star (wye) motor connection is the delta configuration. Again this type of connection will also have 12 wiring terminals directly accessible from the motor's terminal box which serves for external wiring purpose.

12 Leads Terminal Wiring Guide for Dual Voltage Star (Wye) Connected AC Induction Motor

Another convention of wiring connection for the AC induction motor apart from the 9 leads and the widely known 6 leads terminal is the 12 leads motor wiring connection. This can be determined directly by counting the number of available terminal leads accessible from the induction motor's terminal box.

9 Leads Terminal Wiring Guide for Dual Voltage Delta Connected AC Induction Motor

As mentioned in our previous article, another variation of the 9 leads AC induction motor aside from the star (wye) configuration is the delta configuration. It is important to take extra precautionary measure to determine first as to which type of internal coil winding the 9 leads motor is configured before attempting any wiring connection and installing power to run the motor.

9 Leads Terminal Wiring Guide for Dual Voltage Star (Wye) Connected AC Induction Motor

It is of utmost importance to firstly understand the internal wiring configuration of a 9 leads AC induction motor before doing the actual wiring connection.  All 9 leads motors are most commonly made for dual voltage application, this means that the motor was manufactured specifically for dual voltage operation which can be connected in either 220 volts or 440 volts configuration.

Internal Wiring Configuration for Dual Voltage Dual Rotation Single Phase Capacitor Start AC Motor

Wiring a 110 or 220 volts split phase capacitor start AC motor to achieve a dual voltage 110 and 220 volts connection and to be able to run the motor in both forward and reverse direction can be achieved by knowing the order and arrangement of its internal coil winding connection and its associated internal electrical components.