3600I
Page: 43
B WIRING
INSTRUCTIONS
➣
In this appendix…
General Instructions for Electrical Wiring
page 43
Typical Wiring Configurations
page 44
B.1 GENERAL
INSTRUCTIONS
FOR ELECTRICAL WIRING
Follow the instructions detailed in this section for determining the correct wire gauge to
be used for the installation.
1
Use Table 27 to determine the required wire gauge /size for general wiring, such as
relay wiring. Calculate the permitted voltage drop with respect to load current, wire
gauge and length of wires.
Table 27: Maximum DC resistance at 68°F (20ºC) for copper wire
AWG #
mm2
Ohm per 100 ft
Ohm per 100 m
26
0.12 - 0.15
4.32
14.15
24
0.16 - 0.24
3.42
11.22
22
0.30 - 0.38
1.71
5.60
20
0.51 - 0.61
1.07
3.50
18
0.81 - 0.96
0.67
2.20
16
1.22 - 1.43
0.43
1.40
14
1.94 - 2.28
0.27
0.88
12
3.09 - 3.40
0.17
0.55
10
4.56 - 6.64
0.11
0.35
2
Use Table 28 to select wire gauge for power supply wires. DO NOT connect any
circuit or load to detectors’ supply inputs.
•
Select
Number of detectors
connected in one circuit.
•
Select
wiring
Length
per your installation requirements.
•
Refer
to
Power Supply Range
for voltage extreme applied.
Table 28: Wiring length in feet (meter)
Number of
Detectors
Recommended Wire Diameter (AWG)
Power Supply
Range (VDC)
24 18 16
14
- - 22-32
20 18 16
14
- - 22-32
16 20 18
16
14
- 22-32
12 20 18
16
14
- 20-32
8 20
18
16
14
- 20-32
4 and less
20
18
16
16
14
20-32
Ft (m)
164 (50)
328 (100)
492 (150) 656 (200)
820 (240)
Max. Length from Power Supply to Last Detector
