Fike 10-071 - Wire Selection

4.0 INSTALLATION
UL S2203 Cheetah Xi 50 Installation Manual 4-3
FM P/N: 06-369 Rev 6, 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 4-2 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.
TOP VIEW
FRONT VIEW
BOTTOM VIEW
DOOR FRONT VIEWDOOR SIDE VIEW SIDE VIEW
DOOR TOP VIEW
BACK BOX
Exhibit 4-1: Enclosure Dimensions
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 4-2: Conductor Properties (excerpted from NFPA 70, Chapter 9, Table 8)