Gasboy 1000 Series Fuel Management System Installation - Manual (Page 24)

System and Pump/Dispenser Wiring Wire Size
Page 20 MDE-4344A Series 1000 Fuel Management System Installation Manual · November 2008
Wire Size
The AC wire size for power of the system must be 14 AWG or larger. This gauge of wire will
be sufficient for runs of up to 300 feet from the breaker panel to the system. Sites with
distances over 300 feet must use 12 AWG wire or larger.
The AC wire size for a suction pump is dependent upon the HP rating of the pump motor, the
voltage at which the pump will be operated (115/230), and the distance from the circuit
breaker panel to the pump. The chart below may be used as a guide in selecting the proper size
wire according to the specific installation requirements. The wire size for the reset complete
from the pump should be 14 AWG.
The AC wire size for the control lines of a dispenser should be 12 AWG. These control lines
supply power for the reset mechanism, solenoid valve, and submersible starter relay (when the
submersible pump is not directly powered by the dispenser). The wire size for the submersible
pump power depends upon the HP rating of the pump motor, the voltage at which it will be
operated (115/230), and the distance from the circuit breaker to the pump. Use
Figure 4-2 on
page 21 as a guide in selecting the proper size wire according to the specific installation
requirements. The wire size for the reset complete from the dispenser should be 14 AWG.
The DC wire size for the pulser must be 18 AWG (when they are used). Shielded cable, as
described in
“Pulser Wiring Diagrams” on page 28 allows pulser lines to run with the AC
wires.
The DC wire size for the RS-422 lines should be 18 AWG and meet the specifications outlined
in
“Communication Wiring” on page 51 .
All wire should be stranded.
Refer to “Communication Wiring” on page 51 to determine the wire size and type for the
communication wiring for your specific application.