Notifier SLC Wiring Manual —
P/N 51253:U5 12/20/2017
23
Partial Conduit
Shielded Wire Termination
3.4 Partial Conduit
For use with the AFP-100, AFP-200, AFP-300/400, LIB-200, and AIM-200 only
If the length of conduit from the control panel cabinet is less than 20 ft. (6.1 m), terminate the shield as shown. If using a metal box, you
must use a metal conduit.
Connect the shielded wire to the junction box by using a proper connector. Scrape the paint on the cabinet to bare metal to provide a
good electrical connection. Connect the metal conduit between the junction box and the cabinet by using the proper connectors.
Feed the twisted-pair wire into the junction box, through the conduit, into the cabinet box. Within the junction box, connect the appropri-
ate wires together using wire nuts. Connect the shield drain wire to the junction box, at the end of the conduit run, as shown below.
Do not allow the shield drain wire to enter the system cabinet or the conduit.
3.5 Floating Shield
Twisted-
unshielded
wire is recommended for the NFS-320, NFS-320SYS, NFS2-640, NFS-640, NFS2-3030, NFS-3030, LCM-320,
LEM-320, LIB-200A and LIB-400.
If twisted-shielded pair wire is used in these installations, use a floating shield to terminate the wire. The following precautions must be
met:
•
If the SLC is more than 3,000 ft. (914.4 m), divide the shield into floating segments of less than 1,000 ft. (304.8 m). The shield
should be broken at each device.
•
To divide the shield wire into floating segments, cut shield even with jacket and tape as shown.
Cabinet
Shield Drain Wire
Foil
SL
C-sw
te
rm3
.w
mf
Conduit
Figure 3.3 Shield Termination – Partial Conduit
NOTE:
Using shielded wire in applications where it is not recommended will reduce the maximum SLC length.
If shielded wire must be used where not recommended, failing to float the ends will reduce the maximum SLC
length even further.
SLC-
Tape
Figure 3.4 Floating the Shield
