The dispensers/pumps must contain a 1, 10, 100 or 500 count/gallon pulse transmitter and a Single Pole Double
Throw (SPDT) or Double Pole Double Throw (DPDT) switch that operates when the dispenser/pump is
turned on and off. This switch is used to generate a fueling-complete signal when turned off.
Each dispenser must have a junction box of sufficient volume. See Table 1.
Table 1. Size of Dispenser Junction Box
Size of Conductor
Free Space within Box for Each Conductor, Cubic Inches
AWG
Box with Hubs
Box without Hubs
16 or smaller
1.3
1.5
14
1.8
2.0
12
2.0
2.25
10
2.2
2.5
8
2.7
3.0
.
Note: A conductor passing through the box and each conductor terminating in the box is counted as
one conductor. No unplugged openings are permitted
WARNING:
IN INSTALLATION AND USE OF THIS PRODUCT, COMPLY WITH THE NATIONAL ELECTRICAL CODE;
FEDERAL, STATE, AND LOCAL CODES; AND ANY OTHER APPLICABLE SAFETY CODES. IN
ADDITION, TURN OFF POWER AND TAKE OTHER NECESSARY PRECAUTIONS DURING
INSTALLATION, SERVICE, AND REPAIR TO PREVENT PERSONAL INJURY, PROPERTY LOSS,
AND EQUIPMENT DAMAGE.
THIS EQUIPMENT IS TO BE INSTALLED IN ACCORDANCE WITH THE NATIONAL ELECTRICAL CODE
(NFPA-70) ,THE AUTOMOTIVE AND MARINE SERVICE STATION CODE (NFPA-30A), AND THE
FLAMMABLE AND COMBUSTIBLE LIQUIDS CODE (NFPA-3O) .
CAUTION:
THIS EQUIPMENT IS NOT SUITABLE FOR DIRECT CONNECTION TO
INTRINSICALLY SAFE CIRCUITS.
This equipment is intended for self-service type dispensing devices containing equipment suitable for that purpose.
The wiring diagrams contained here typify installation circuits for dispensers containing:
Computer electric reset actuator (when provided)
Pulse transmitter with appropriate ratings
VST, 2010
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