4
ELECTRICAL
Disconnect power at service panel be-
fore connecting pressure switch.
Figure 3 - 115/230 volt motor wiring con-
nections through typical pressure switch.
Dual voltage motors come factory wired for 230 volt
operation. Inset shows 115 Volt conversion.
Do not alter wiring in single voltage motors.
Match motor voltage to power supply voltage.
Risk of serious or
fatal electrical shock.
Connect motor ground
wire before connecting
power
supply wires.
Do not ground to a gas
supply line.
Turn off power before
working on pump or
motor.
Match motor voltage and power supply voltage.
Supply voltage must be within ±10% of motor nameplate
voltage. Incorrect voltage can cause fire or seriously
damage motor and voids warranty. If in doubt, consult a
licensed electrician.
Use wire size specified in wiring chart. If possible,
connect pump to a separate branch circuit with no other
appliances on it.
1. Install, ground, wire and maintain pump in accor-
dance with your local electrical code and all other
codes/ordinances that apply. Consult your local
building inspector for code information.
2. Connect ground wire first as shown at left. Ground
wire must be a solid copper wire at least as large as
power supply wires.
• There must be a solid metal connection between
pressure switch and motor to provide motor ground-
ing protection. If pressure switch is not connected to
the motor, connect ground screw in switch to motor
ground screw. Use a solid copper wire at least as
large as power supply wires.
• Connect ground wire to grounded lead in service
panel, metal underground water pipe, well casing
at least 10’ (3M) long, or to ground electrode pro-
vided by power company.
3. Connect power supply wires as shown at left.
4. Replace pressure switch cover before turning on
power to pump.
Motor normally operates at high tem-
perature and will be too hot to touch. It is protected
from heat damage during operation by an automatic
internal cutoff switch. Before handling pump or motor,
stop motor and allow it to cool for 20 minutes.
Max. Load
Branch Fuse*
DISTANCE IN FEET FROM MOTOR TO SUPPLY
Motor HP
Volts
Amp
Rating-Amp
0 - 50
51 - 100
101 - 200
201 - 300
301 - 400
401 - 500
AWG WIRE SIZE (mm
2
)
1/3
115/230
8.8/4.4
15/15
14 (2)
14 (2)
10/14 (5/2)
8/14 (7/2)
8/14 (7/2)
6/12 (13/3)
1/2
115/230
12.2/6.1
20/15
12/14 (3/2)
12/14 (3/2)
10/14 (5/2)
8/14 (7/2)
6/12 (13/3)
4/10 (21/5)
3/4
115/230
14.8/7.4
20/15
12/14 (3/2)
12/14 (3/2)
8/14 (7/2)
6/12 (13/3)
6/12 (13/3)
4/10 (21/5)
1
115/230
19.2/9.6
25/15
10/14 (5/2)
10/14 (5/2)
8/14 (7/2)
6/12 (13/3)
4/10 (21/5)
2/10 (34/5)
TABLE II
– Recommended Fusing and Wiring Data - 60 Cycle Motors
(*) Dual element or Fusetron time delay fuses recommended for all motor circuits.
