FV-40 Series Flame Detector
087-0056 REV F
56
B Wiring
Instructions
Failure to review and understand these instructions could lead to
improper wiring which could create an improperly functioning
detector and may cause serious injury or death.
➣
In this appendix…
General Instructions for Electrical Wiring
Typical Wiring Configurations
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.
Use Table 28 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 28: Maximum DC resistance at 68°F (20ºC) for copper wire
AWG #
mm
2
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
Use Table 29 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.
