Gasboy Atlas Fuel Systems Site Prep Manual - Manual (Page 20)

Site Preparation Electrical Requirements
Page 16 MDE-4333E Atlas Fuel Systems Site Preparation Manual · November 2011
• A seal-off ‘Y’ fitting (for example, Killark ® Type EY) must be installed on all units as a
first connection where conduit leaves the ground.
• If TopKAT is factory mounted, a separate conduit must be installed. Refer to the TopKAT
documentation for field wiring.
— MDE-4319 TopKAT Fuel Management System Installation Manual
— MDE-4331 Atlas Fuel Systems Installation Manual
Wiring
The distinction between the Commercial and Retail pump/dispenser units is that the
Commercial unit must use the separate conduit arrangement to keep the signals from
interfering with one another or other noise generating devices, whereas with the Retail unit
this is not required.
Atlas - Commercial
The Atlas Commercial pump/dispenser utilizes two conduits, one for AC power and second
for the DC signals (the two conduits must be kept separate to reduce signal interference). The
AC conduit carries AC power line and supplies power to the valves and motors, whereas the
DC conduit delivers the RS-485 signal when used with a CFN and TopKAT, or Pulse Output
when used with a series 1000 or other manufacturer’s control system.
When installed in a separate DC conduit, 18 American Wire Gauge (AWG) wires are required
for installation. Although it is recommended that DC Commercial pump interface wires
(RS-485 or Pulse Output) be run in a conduit separate from AC wires, they can be combined in
the same conduit with AC wires provided UL-listed cable with the following specifications are
used.
Gasboy can supply Belden ® 1063A (P/N C09655) which is a UL-listed, four-conductor cable
that meets the requirements listed above.
Note: Belden 1063A is UL-listed but not CSA-listed.
Atlas - Retail
The Atlas Retail pump/dispenser utilizes only one main conduit as it does not require a DC
conduit. The AC conduit is used to carry AC wire and Two-wire, twisted-pair wiring.
Components/Parameters Specification
Conductor 18 AWG stranded wire. Number of conductors to be determined by pulser
requirements (to determine number of wires used, refer to wiring diagram ).
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 600 V.
Environmental Gas and oil-resistant, suitable for wet or dry locations.