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WIRING INSTRUCTIONS
s
WARNING
!
ELECTRICAL PRECAUTIONS
All wiring, electrical connections, and system grounding must comply with the National Electrical Code (NEC) and with any local codes and ordinances.
Employ a licensed electrician.
s
WARNING
!
RISK OF ELECTRICAL SHOCK
Before servicing motor-operated equipment, shut off the power at the main electrical panel and disconnect the power supply from motor and accessories.
Use safe working practices during servicing of equipment.
WIRING
An electrician should be employed to do the wiring and connect the
electrical service to the pump. The pressure switch is wired to the motor
at the factory, and the voltage for which the motor is wired is indicated by
the voltage change device, which is found under the wiring access cover
located on the back of the pump. Make sure the motor is wired for the
same voltage as the power supply. Refer to the inside of the wiring access
cover or this manual for voltage changing instructions. The power lines
should be connected to the pressure switch terminals marked "line"
(Fig. 10). It is recommended that a separate circuit be led from the
distribution panel to the pump unit. A ground fault interrupter (GFI)
protected circuit should be used for all electrical devices operating near
water. Install a properly fused disconnect switch in the line and make
certain the wiring is adequately sized and well-insulated. Undersized wire
between the motor and the power source will adversely limit the starting
and load carrying abilities of the motor. Minimum wire sizes for motor
branch circuits are recommended (see Table 2, Maximum Wire Length).
For added safety, the pump and motor should be grounded to the well
casing, if metal, or the ground in the distribution panel.
Table 2 - MAXIMUM WIRE LENGTH
MOTOR
25 ft
HP
Volts
(8 m)
115
14
1
230
14
Based on an approximate 3% voltage drop.
Fig. 10 - ELECTRICAL CONNECTIONS
Motor (Load)
12
WIRE GAUGE (AWG)
50 ft
100 ft
150 ft
(15 m)
(30 m)
(46 m)
12
10
8
14
14
14
L 1
L 2
Power Supply (Line)
Ground
Pressure Switch
200 ft
(61 m)
6
12
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