
4
Hazardous voltage. Can shock, burn, or
cause death. Disconnect power to motor before working on
pump or motor. Ground motor before connecting to power
supply.
WIRING
Ground motor before connecting to electrical power
supply. Failure to ground motor can cause severe or
fatal electrical shock hazard.
Do not ground to a gas supply line.
To avoid dangerous or fatal electrical shock, turn
OFF power to motor before working on electrical
connections.
Supply voltage must be within ±10% of nameplate
voltage. Incorrect voltage can cause fire or damage
motor and voids warranty. If in doubt consult a licensed
electrician.
Use wire size specified in Wiring Chart (Page 3). If
possible, connect pump to a separate branch circuit
with no other appliances on it.
Wire motor according to diagram on motor
nameplate. If nameplate diagram differs from
diagrams above, follow nameplate diagram.
1. Install, ground, wire and maintain your pump in compliance
with the National Electrical Code (NEC) in the U.S., or the
Canadian Electrical Code (CEC), as applicable, and with all
local codes and ordinances that apply. Consult your local
building inspector for code information.
2. Provide a correctly fused disconnect switch for protection
while working on motor. For switch requirements, consult
your local building inspector for information about codes.
3. Disconnect power before servicing motor or pump. If the
disconnect switch is out of sight of pump, lock it open and
tag it to prevent unexpected power application.
4. Ground the pump permanently using a wire of the same
size as that specified in wiring chart (Page 3). Make ground
connection to green grounding terminal under motor
canopy marked GRD. or .
5. Connect ground wire to a grounded lead in the service
panel or to a metal underground water pipe or well casing
at least 10 feet long. Do not connect to plastic pipe or
insulated fittings.
6. Protect current carrying and grounding conductors from
cuts, grease, heat, oil, and chemicals.
7. Connect current carrying conductors to terminals L1 and L2
under motor canopy. When replacing motor, check wiring
diagram on motor nameplate against Figure 3. If the motor
wiring diagram does not match either diagram in Figure 3,
follow the diagram on the motor.
IMPORTANT: 115/230 Volt single phase models are shipped
from factory with motor wired for 230 volts. If power supply
is 115 volts, remove motor canopy and reconnect motor as
shown in Figure 3. Do not try to run motor as received on 115
volt current.
8. Motor has automatic internal thermal overload protection. If
motor has stopped for unknown reasons, thermal overload
may restart it unexpectedly, which could cause injury
or property damage. Disconnect power before servicing
motor.
9. If this procedure or the wiring diagrams are confusing,
consult a licensed electrician.
ELECTRICAL
Connection diagram for dual voltage, single-phase
motors. Your dual-voltage motor’s terminal board (under
the motor end cover) will match one of the diagrams
below. Follow that diagram if necessary to convert
motor to 115 Volt power.
Connect power supply wires to L1 and L2. For 3-phase
motors, or if motor does not match these pictures, follow
the connection diagram on the motor nameplate.
3914 0301
115 V
230 V
230 Volt to 115 Volt Conversion. Move plug to change voltage.
A
L1
230
Volts
115
Volts
230 Volt to 115 Volt Conversion. Move plug to change voltage.
Pull plug
straight
out from
terminal
board;
1.
1.
2.
2.
Plug in again
with arrow
on plug
pointing to
'115 Volts'.
Ground
Screw
A
L1
230
Volts
115
Volts
Clamp the power cable to prevent
strain on the terminals.
Ground
Screw
Clamp the power cable to prevent
strain on the terminals.
Connect the green (or bare copper)
ground wire to the grounding screw.
Connect the green (or bare copper) ground
wire to the green ground screw.
230V
115V
230V
115V
A
A
L2
L2
L1
L1
230V
115V
A
A
L2
L2
L1
L1
230V
115V
Power Supply
Wires
FIGURE 3 – 115/230V Dual Voltage Single Phase Wiring Diagram