BASIC SERVICE
ELECTRICAL SERVICE (Cont.)
Motor Connections —
1.Models
2.Motor rotation was set at the factory. For three phase machines, reversing the motor direction is done in the control cabinet by reversing the wires L1 and L2 on the disconnect side of the main electrical connection block. For single phase machines, motor rotation is changed at the motor connection plate on the rear of the single phase motor (if necessary).
Refer to Fig. 20 for the proper wiring of the pump motor for single and three phase voltages.
Single Phase - Low Voltage | Single Phase - High Voltage | |||
L1 | LINE | L1 | LINE | |
J | J | |||
|
| |||
3 | 3 | 2 | ||
8 | ||||
4 | 4 | 8 | ||
|
| |||
| LINE |
| LINE | |
L2 | 2 | L2 |
| |
|
|
Figure 20
Pump Motor Wiring Diagrams
480V | |
Three Phase - Low Voltage | Three Phase - High Voltage |
6 5 4
6
5
4 | 575V Only |
| Three Phase |
9 | 8 | 7 | 9 | 8 | 7 |
3
2
1
3
2
1
3
2
1
LINE | LINE | LINE |
31