Kistler-Morse KM L-Cell Bolt-On - Manual (Page 35)

Chapter 4. L-Cell Installation on Horizontal Beams
4-10
Figure 4-16. Wiring L-Cells to Junction Box
There are two versions of the junction box enclosure. Both junction
boxes have four small holes for wiring L-Cells to the junction box, as
described above. In addition, the junction box has one or two large
holes:
•
One large hole for conduited installation — The large hole, which
accommodates a
3 /4” conduit fitting, is for wiring the junction box
to the other junction boxes and to the signal processor.
• Two large holes for non-conduited installation — The two large
holes, which are equipped with PG13.5 cable fittings, are for wiring
the junction box to the other junction boxes and to the signal
processor. KM requires the use of cable trays for non-conduited
installations.
Notes
1. The procedure below assumes the conduit/cable tray has
been installed.
2. Seal all conduit fittings against water entry. Install drain holes
atconduit/cable tray lowest elevation(s) to allow condensa
tion to drain.
3. Use Belden™ 3-conductor shielded interconnect cable or
equivalent to wire junction boxes together and to the signal
processor. For lengths up to 1,000’ (305m) use 18-gage Belden
8791 cable. For lengths from 1,000’ to 2,000’ (305m to 610m)
use 16-gage Belden 8618 cable.
4. When wiring cable to junction box terminals, strip back 3”
(76mm) of cable sheathing to expose the three conductor
wires and shield wire inside. Strip
1 /4” (6mm) of insulation
from the end of each of the conductor wires.
5. All wiring routed between junction boxes and signal
processor must be continuous (no splices).
Wiring Junction Boxes Together
and to Signal Processors
Junction Box PCB 63-1170-01
Drip Loop (typical)
Note:
• Verify that junction box PCB is 63-1170-01 (bottom center)