Electrical Connections - Franklin Electric SR Series Owner's Manual

Electrical Connections

Employ a licensed electrician or water systems contractor to ensure installation is done properly. All
wiring must be done in accordance with national and local electrical codes. Follow the cable splicing kit
instructions.
1. Make sure the power supply corresponds with the electrical rating of the motor.
• For 3-wire, single phase pumps, check electrical rating of the control box.
2. Install a fused disconnect switch or circuit breaker.
3. Ground the pump and the distribution panel with the motor's green conductor.
4. For two-wire pumps, make wiring con-
nections.
5. For three-wire, single-phase pumps,
make wiring connections and install the
control box.
• Mount in an area protected from
rain, snow, high temperatures, and
temperatures below 14 °F (-10 °C).
• Refer to the control box's wiring dia-
gram.
• Install a magnetic contac-
tor if the pressure switch is
not sufficient to handle the
motor's electrical rating.
The pressure switch is then
used as a pilot circuit to
control the contactor.
6. For 3-phase pumps, make wir-
ing connections and install a
magnetic starter equipped
with quick-trip, ambient com-
pensated heaters, electronic
adjustable overload, soft start
or VFD of correct horsepower
size.
7. For 3-phase motors, install a
separate lightning arrestor
close to the wellhead.
8. Test the unit. Brace pump shell
and apply power momentarily.
9. Ensure pump rotation is clock-
wise when viewed from pump
discharge.
• For three-phase motors,
interchange any two leads
at the magnetic starter to
change rotation.
10. Place the motor and pump
labels in the circuit breaker
box for future reference.
2 WIRE, Single Phase Wiring Diagram
Incoming 1 Phase Power
3-WIRE, Single Phase Wiring Diagram
Pressure Switch (for pilot circuit)
If Magnetic Contactor is used
for starting.
Circuit Breaker or
Fused Disconnect Switch
Incoming 1 Phase Power
Switch or Timer (for direct switching) OR
Magnetic Contactor (w/ pilot circuit)
3-WIRE, 3-Phase Wiring Diagram
Circuit Breaker OR
Fused Disconnect Switch
Incoming 3-Phase Power
INSTALLATION
Electrical Connections
Circuit Breaker or Fuse Disconnect Switch
Switch or Timer
1 Phase Submersible Motor
Note: Order of red, yellow and black may
vary from control box to control box.
Always connect like colors.
L1 L2 R Y B
1-Phase Sumbersible Motor
Pressure Switch
Magnetic Contactor w/
3-leg protection having
proper overload protection
3-Phase Submersible Motor
Submersible
Cable
Single-Phase
Control Box
Red
Yellow
Black
3