3.2 Conduit installation
Conduit must be installed for the VST Fuel S-810 wiring. Refer to the National Electric Code and applicable local
codes for specific requirements. Generally, rigid metallic conduit is recommended for all wiring due to its
electrical noise shielding and durability characteristics. Other types of conduit may be used as allowed by
the National Electric Code and applicable local codes if proper precautions are taken in its application.
Separate conduits are required for the ac circuits and for the low voltage circuits. Shielded cable is
recommended for all low voltage circuits.
4. VST FUEL S-810 INSTALLATION
4.1 Wiring Requirements
The wire insulation must be oil and moisture proof, using THW, THWN, or equivalent insulation as defined in the
National Electrical Code. All VST Fuel S-810 low-voltage wire size is to be minimum AWG #18 stranded
shielded cable with the shield grounded at one end only. AC wire size is to be minimum AWG #14.
All wiring should be either color coded or numbered to facilitate connection of the wire ends.
CAUTION:
Do not use non moisture, non oil-proof, or standard house grade wire.
4.2 Wire Manufacturers
There are several manufacturers of wiring, any of which produce wire and cable that will work satisfactorily, The
following wire manufacturers' products have been used in conduit on previous systems with good results.
Alpha Wire Corporation; Elizabeth, New Jersey
Belden Electronic Wire and Cable; Richmond, Indiana
Chester Cable Company; Chester, New York
Coleman Wire and Cable Company; Chicago, Illinois
General Electric Vulkene Wire
4.3 Dispensers/Pumps
A. GENERAL
VST Fuel S-810 systems are designed to operate with most commercial type fuel dispensers or pumps. The
dispensers and/or pumps are normally provided by the user or qualified contractor.
For most efficient system operation, dispensers/pumps should be equipped with electric resets. This feature
simplifies control interfacing and, also, helps eliminate false counts during the dispenser computer reset
cycle.
VST, 2010
11
