48
EMR
3
- Truck Installations
EMR4 Terminal & Fueling Depot Installation
Installing the Interconnect Box
Installing the Interconnect Box
NATIONAL ELECTRICAL CODE COMPLIANCE
The following information is for general reference and is not intended to replace recommended National Electric
Code (NEC) procedures. It is important for the installer to understand that electrical equipment and wiring located
in Class I, Division 1 and 2 installations shall comply with the latest appropriate articles found in the National
Electric Code (NFPA 70) and the Automotive and Marine Service Station Code (NFPA 30A).
GROUNDING
Proper grounding of the EMR equipment is essential for several reasons. First, in a typical installation, grounding
prevents hazardous voltages from being present on the equipment. Secondly, grounding prevents the build-up of
static charge on the equipment. Either of these conditions could be very hazardous when in the proximity of
explosive mixtures found at fuel supply depots and terminals. Proper grounding requires that a very low impedance
connection be made to the earth. At the distribution panel, this is accomplished by means of a dedicated
conductor buried in the earth. It is imperative that all local, regional and national regulations are followed when
connecting to the grounding system.
WIRE TYPE FOR NON-BONDED METALLIC OR PVC CONDUIT
Veeder-Root requires the use of shielded cable when using non-bonded metallic or PVC conduit in any portion of
the wiring between the Display Head and the IB. In these installations, shielded cable must be rated less than 100
picofarad per foot and be manufactured with a material suitable for the environment.
Use either the 4-wire cable supplied by V-R, P/N 846000-1XX or any equivalent cable or wiring with rated
capacitance of less than 100 picofarads per foot (per 304.8 mm). Note that conductor wire colors vary depending
on the cable manufacturer (caution: the Display Head to IB wiring illustrations in this section show wire colors in
the V-R cable. Alternate cables may have different wire colors).
Field wiring may be both above ground or below grade.
WIRE LENGTH
Improper system operation could result in undetected potential environmental and health hazards if the Display
Head to IB wire runs exceed 1000 feet (304.8 m). Wire runs must be less than 1000 feet to be UL acceptable for
this application.
MOUNTING AND WIRING THE IB UNIT
1.
The physical dimensions of the Interconnect Box (IB) are shown in Figure 21 on page 28. The IB is installed in
the terminal - fueling depot office. Use four, 3/16” (4 mm) bolts to mount the IB to the mounting surface.
2.
Figure 39 shows IB wiring connections. For IB Power Side terminal wiring connections, remove hole plugs
and use cord grips for all cables attaching to this terminal block.
For IB J10 and J11 terminal I.S. wiring connections, remove hole plugs and use cord grips for all cables
attaching to these terminal blocks. The drain wire from each Display Head cable must be connected to the
chassis ground clamp in the IB I.S. area.
3.
The printer
must
be within 6 feet (1.83 m) of the IB box.
All field wiring entering the IB box should be run as straight as possible from the conduit
entry knockout to their designated terminal connectors.
NOTICE
NOTICE
