When wiring a High Voltage Delta AC Motor, which terminals are spliced together?

The correct answer involves understanding the configuration of a delta connection in a three-phase AC motor. In a delta configuration, the motor's terminals are connected in such a way that each terminal connects to the others in a triangular pattern, forming the shape of a delta (Δ).

In this case, the terminals T4, T7, T8, T5, T6, and T9 are specific points that form the connections needed for a proper delta setup. The splicing together of these terminals ensures that each phase of the motor is appropriately connected to form the closed loop necessary for operation. By connecting T4 to T7, T8 to T5, and T6 to T9, the correct inter-phase connections are achieved, allowing the motor to operate efficiently and effectively.

The choice of the correct splices prevents any phase imbalance and helps in maintaining the required electrical performance of the motor. Each combination listed in the other options does not adhere to the correct method of wiring a delta connection, which could lead to operational inefficiencies or even damage to the motor.