Rice Lake SURVIVOR OTR Steel Deck - Manual (Page 26)

22 OTR Truck Scale Assembly Instructions
7.0 Connecting Electronic Equipment
Sixty feet of six-wire homerun cable is supplied for wiring the J-box to the indicator. It is to be run in 3/4"
galvanized metal or plastic conduit from the J-box to the indicator. Conduit for this purpose is to be obtained
locally. A section of flexible conduit with connector is provided where this cable exits the J-box. Do not run any
other electrical cables in or near the conduit to the indicator.
7.1 Indicator to Peripherals
All conduit for cabling from the indicator to remote displays and other peripheral devices is to be obtained locally.
Conduit runs may be buried in a trench or secured above ground. Use separate conduit runs for AC power and DC
data lines to avoid interference. As a general guideline, run AC and DC cables in separate trenches if possible.
When DC data cables must run in the same trench as AC power lines, separate cables as much as possible.
Figure 7-1. Conduit Run in Trench
7.2 Single-Point Ground Conductor
A bare 10 gauge solid wire is run from the scale frame to the main AC power earth ground. DC transient protection
must be properly grounded to function correctly.
7.3 J-box Connections
Each J-box contains a JB8SPT summing board with DC transient protection devices. A desiccant such as the
RLWS Industrial Corrosion Inhibitor (PN 16037) should be added to the J-box enclosure before final closure.
In a truck scale up to 70' long, a single J-box is located in a J-box pocket in the center or B module (see Figure 5-1
16). A summing card mounted within the J-box is used to make all cable terminal connections. All terminal pins
are clearly marked as to function.
On scales over 70' long with four or more modules, two or more J-boxes are necessary.
Refer to assembly print or foundation plan for J-box location and homerun cable output.
Note