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Electrical
Risk of electrical shock. Can shock, burn,
or kill. Connect ground wire before connecting power
supply wires. Use the wire size (including the ground
wire) specified in the wiring chart. If possible, connect
the pump to a separate branch circuit with no other
appliances on it.
Risk of explosion. Do not ground to a gas
supply line.
Wiring Connections
Risk of fire. Can cause severe injury, property
damage or death. Incorrect voltage can cause a fire or
seriously damage the motor and voids the warranty.
The supply voltage must be within ±10% of the motor
nameplate voltage.
NOTICE Dual-voltage motors may be set for 115 V
or 230 V. If necessary, reset the motor to the desired
voltage, as shown. Do not alter the wiring in single
voltage motors.
Install, ground, wire, and maintain your pump in
compliance with the National Electrical Code (NEC) 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.
Connection Procedure:
1. Connect the ground wire first as shown in Figure 6.
The ground wire must be a solid copper wire at least
as large as the power supply wires.
2. There must be a solid metal connection between the
pressure switch and the motor for motor grounding
protection. If the pressure switch is not connected
to the motor, connect the green ground screw in the
switch to the green ground screw under the motor
end cover. Use a solid copper wire at least as large
as the power supply wires.
Wiring Chart – Recommended Wire and Fuse Sizes
NOTICE Your motor's rated "Max Load Amps" can be found on the motor nameplate.
Max Load
Voltage
HP
Amps
1/2
12.2
115 Volts
3/4
14.8
1
19.2
1/2
230 Volts
3/4
1
Branch Fuse
Rating Amps
0-100 (0-30)
9.4
15
14 (2)
20
12 (3)
25
10 (5.5)
4.7
6.1
15
7.4
9.6
3. Connect the ground wire to a grounded lead in a
service panel, to a metal underground water pipe, to
a metal well casing at least ten feet (3 m) long, or to
a ground electrode provided by the power company
or the hydro authority.
4. Connect the power supply wires to the pressure
switch as shown in Figure 6. Pump should be
connected to a separate electrical circuit directly
from the fuse box or circuit breaker panel.
Winterizing the Pump
To prepare the pump for freezing temperatures:
1. Shut off power to the pump.
2. Relieve system pressure. Open a faucet and let it
drain until water stops flowing.
3. Drain the pump. Your pump may have a separate
drain plug. Remove this plug and let it drain.
Your pump may only have a plug or connection on
the side of the pump. Remove this and let the pump
drain. Some water will remain in the pump. A small
amount of water left in the pump will not harm it if
it freezes.
Distance in Feet (Meters); Wire Size AWG (mm²)
101-200 (31-61)
201-300 (62-91)
10 (5.5)
10 (5.5)
8 (8.4)
8 (8.4)
6 (14)
14 (2)
14 (2)
12 (3)
301-400 (92-122)
401-500 (123-152)
6 (14)
6 (14)
4 (21)
4 (21)
14 (2)
12(3)
12 (3)
10 (5.5)
10 (5.5)
13
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