Xylem IM158 R04 Model SMVT - Manual (Page 20)

18 SMVT Installation, Operation and Maintenance Manual
Warning: Motors without built-in protection MUST be provided with contactors
and thermal overloads for single phase motors, or starters with heaters for three
phase motors. See motor nameplate.
Warning: Motors equipped with automatic thermal protectors open the motor’s
electrical circuit when an overload exists. This can cause the pump to start
unexpectedly and without warning.
• Use only stranded copper wire to motor and ground.
• Wire size MUST limit the maximum voltage drop to 10% of the motor nameplate voltage at
the motor terminals.
• The ground wire MUST be at least as large as the wire to the motor.
• Wires should be color coded for ease of maintenance.
• Follow motor manufacturer’s wiring diagram on the motor nameplate or terminal cover
carefully.
• Three phase motors require all-leg protection with properly sized magnetic starters and
thermal overloads.
Warning: Failure to permanently ground the pump, motor and controls before
connecting to electrical power can cause shock, burns or death.
Connect the electrical leads to the motor as follows:
Single Phase Motors
1. Connect the BLACK wire to the BLACK motor lead.
2. Connect the WHITE wire to the WHITE motor lead.
3. Connect the GREEN wire to the GREEN motor lead.
Three Phase Motors
See Figure 15 for three-phase wiring diagrams.
Hazardous machinery
can cause personal
injury or death.
WARNING
Installation (continued)