Spectrex SafEye 300 Series, Руководство пользователя

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TM794200 Rev Ad, March 2019 65
Appendix A: Wire Selection Tables
A.1 General Instructions for Electrical Wiring
• mA output or relay wiring : Refer to Table 14 to determine the
required wire gauge for general wiring and to calculate the permitted
voltage fall with respect to loads current, wire gauge, and length of
wires.
• Power supply wires : Refer to Table 15 to select wire gauge. DO NOT
connect any circuit or load to detector supply inputs.
Table 14: Maximum DC Resistance at 68°F for Copper Wire
AWG # mm 2 Ohm/100ft Ohm/100m
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
• Select “number of detectors” connected in 1 circuit.
• Select “wiring length” per your installation requirem ents.
• Refer to “power supply range” for voltage extreme applied.