4.0 INSTALLATION
UL S2203
CyberCat 254/1016 Installation Manual
4-5
FM
P/N: 06-326
Rev 14, 09/2015
4.5
WIRE SELECTION
When planning the type of wire to be used, refer to National Electrical Code (NFPA 70), wire manufacturers
product specifications and National Fire Alarm and Signaling Code (NFPA 72). The wiring specifications
shown in Exhibit 4-3 may be used to estimate the appropriate wire size. Completely review the System
Components section for planning the appropriate wiring for each circuit and device.
Critical Note:
CyberCat systems designed for voice alarm/emergency communication system (ECS)
operation with selective evacuation or relocation of building occupants, must comply with the pathway
survivability requirements outlined in NFPA 72 in order to maintain communication with occupants that
remain in the building during a fire. The survivability requirements apply to notification, communication,
and other circuits necessary to ensure the continued operation of the emergency communication system
(ECS) during a fire.
4.6
CIRCUIT CLASS DESIGNATIONS
The circuits on the CyberCat controller and its field devices can be configured for Class B (two wire) or Class
A or X (four wire) operation. Class B wiring does not include a redundant path and the operational capability
stops at a single open. Class A wiring includes a redundant path and the operational capability continues
past a single open. When Class A wiring is utilized, no t-tapping is allowed and the return leg from the last
device on the circuit back to the panel or device must be run in a separate conduit from the main leg. With
Class A wiring, the control panel is constantly supervising all wiring (both main and redundant). Once an
open fault is detected on either leg, the panel immediately transfers communication to the intact redundant
wiring. Class X wiring is the same as Class A wiring, but requires the use of isolator devices in order to
provide operational capabilities past a single open or short-circuit.
4.7
PULL FIELD WIRING INTO THE ENCLOSURE
The CyberCat system wiring is classified as either power-limited or non-power-limited per NEC article 760.
All power-limited wiring must be separated from all non-power-limited wiring by a minimum distance of 1/4
inch (6 mm) within the system enclosure. The CyberCat power-limited versus non-power-limited circuits are
designated as follows:
Power-Limited circuits include:
P2 – Relays (Alarm, Supervisory, Trouble)*
P3 – Computer Interface Connection
P4 – VESDA HLI Interface
P5 – Fike Guard Interface
P6 – RS-485 Peripheral Buss
P7 – Auxiliary Power
P8 & P9 – Signaling Line Circuits (1 & 2)
P10 & P11 – Notification Appliance Circuits (1 & 2)
P12 & P13 - CRM4 relay or Reverse Polarity modules*
Non-power-limited circuits include:
P1 – AC Power Supply and Battery Input
P21 – Supplemental Power Supply AC Power Input
*
Connected to power-limited or non-power-limited field wiring,
but not both.
When installing optional components within the CyberCat enclosure, refer to the installation instructions
supplied with each component for designation of power-limited versus non-power-limited circuits. Route all
field wiring through the appropriate conduit knockouts, then to the appropriate circuit terminals. Provide
adequate wire length to allow strain relief.
Size
(AWG)
Strands
Diameter
Uncoated Copper
Coated Copper
in.
mm
ohm/kFT
ohm/km
ohm/kFT
ohm/km
18
1
0.040
1.02
7.77
25.5
8.08
26.5
18
7
0.046
1.16
7.95
26.1
8.45
27.7
16
1
0.051
1.29
4.89
16.0
5.08
16.7
16
7
0.058
1.46
4.99
16.4
5.29
17.3
14
1
0.064
1.63
3.07
10.1
3.19
10.4
14
7
0.073
1.85
3.14
10.3
3.26
10.7
Exhibit 4-3: Conductor Properties
(excerpted from NFPA 70, Chapter 9, Table 8)
