MDE-4567D 9820K Series AST Pumps Installation and Operation Manual · January 2020
Page 9
Pulse Output
Wiring
Pulse Output
The Pulse Output option provides the means for an external system to monitor the quantity
that is dispensed by the 9820K pumping unit. Refer to
on
, along with the installation manual of the system that will be
connected to the 9820K pumping unit.
RS-485
For information regarding the RS-485 option, refer to
on
on
, along with the installation manual of the Gasboy Fuel Controller
system for proper wiring.
Wire Size
The AC wire size of the Pump Motor Feed (power supplied to unit for driving motor), Pump
Motor (power from unit to motor), Neutral Feed (Neutral supplied to unit for driving motor)
and Neutral (power from unit to the motor) is dependent upon the HP rating of the Pump
Motor, the voltage at which the pump will be operated (115 VAC or 230 VAC International),
and the distance from the circuit breaker panel to the pump.
In cases where multiple units are powered from the same breaker through the same wires, the
gauge of the wires should be increased to handle the added load according to the distance from
the breaker panel.
The chart below should be used as a guide in selecting the proper wire size according to the
specific installation requirements.
Wire Size Chart
115 Volt Wire Gauge Sizes per Feet of Run
Motor
HP
25'
50'
100'
150'
200'
250'
300’
Over 300', Use Relay at
Motor Location
1
14
12
10
8
6
6
4
230 Volt Wire Gauge Sizes per Feet of Run
1
14
12
12
10
10
10
8