Gasboy 9120K Series Installation - Manual (Page 16)

Wiring Conduit
Page 12 MDE-4567C 9120K and 9820K Series AST Pumps Installation and Operation Manual · September 2008
The DC wire size for the Pulser lines connecting the pumping unit to the AST register
assembly must use 4-conductor, 18 AWG shielded cable (Belden 89418, Gasboy P/N
C08864). This cable allows the pulser wires to run in the same conduit as the AC wiring for
the short distance between the pumping unit and the register assembly. Belden 89418 is rated
as follows:
• Gas and oil-resistant insulation and jacket
• 18 AWG tinned, stranded, copper
• Four conductors
• 300 Volt maximum operating voltage
• Aluminum/Mylar shielded with drain wire
Twisted-pair shielded cable is highly recommended for the Pulse Output or RS-485 field
wiring (when they are used). This type of cable provides superior noise immunity and must be
used for distances over 100 feet or any time pulse output. RS-485 wiring is included in the
same conduit as the AC wires. This cable must meet the following specifications:
• Conductor: 18 AWG stranded wire. 2 twisted-pairs.
• Shield: Foil-wrapped 100% coverage and/or tinned copper braid 90% coverage
• Drain Wire: Stranded, tinned copper, 20 AWG or larger/or braided shield
• Voltage Rating: Maximum operating voltage of 600V
• Environmental: Gas and oil-resistant; suitable for wet or dry locations.
Gasboy can supply Belden 1063A (P/N C09655) which is a UL-listed, 4-conductor cable that
meets the requirements listed above.
Note: Belden 1063A is UL-Listed but not CSA-listed.
Cable with a voltage rating of less than 600 V must be installed in a conduit separate from all
AC wires.
See the Gasboy Fuel Management System Installation Manual for specific requirements.
Conduit
All wiring to the Gasboy Series 9x20K pumping unit must be installed in threaded, rigid, metal
conduit. PVC IS NOT ACCEPTABLE. The Gasboy Warranty will not apply to any pump in which the
AC and DC wires are run in the same conduit, J-Box or wireway, except as noted. The Gasboy
Warranty will not apply to any pump using PVC as conduit.
IMPORTANT INFORMATION
All wiring and conduit runs must conform with all building/fire codes, all Federal, State, and
Local codes, National Electrical Code, NFPA 70, NFPA 30, and Automotive and Marine
Service Station Code (NFPA 30A) codes and regulations. Canadian users must also comply
with the Canadian Electrical Code.
Metallic conduit is not considered an adequate equipment ground. Separate ground wiring
must be used.