Appendix B: Worksheets
Vigilant VS1 and VS2 Technical Reference Manual 209
Table 48: Longest allowable circuit path with 1 to 5 GSA-UM or -MABs configured for two-wire
smoke detectors
Maximum allowable wire distance using nontwisted, nonshielded and
twisted, nonshielded wire pairs (evenly distributed)
18 AWG 16 AWG 14 AWG
Number of
detectors
Number of
modules
(1 or 2
channel)
ft. m ft. m ft. m
1 to 25 0 5172 1577 8217 2505 13069 3984
26 to 50 0
5172 1577 8217 2505 13069 3984
51 to 75 0
5172 1577 8217 2505 13069 3984
76 to 100 0
5172 1577 8217 2505 13069 3984
101 to 125 0 4980 1518 7912 2411 12583 3835
0 1 to 25
5172 1577 8217 2505 13069 3984
1 to 25 1 to 25
4861 1482 7722 2354 12281 3743
26 to 50 1 to 25
4345 1324 6903 2104 10979 3346
51 to 75 1 to 25
3843 1171 6105 1861 9710 2959
76 to 100 1 to 25
3359 1024 5337 1627 8488 2587
101 to 125 1 to 25
2895 882 4599 1402 7315 2230
0 26 to 50
3550 1082 5640 1719 8971 2734
1 to 25 26 to 50
3145 958 4996 1523 7945 2422
26 to 50 26 to 50
2742 836 4356 1328 6928 2112
51 to 75 26 to 50
2348 716 3730 1137 5932 1808
76 to 100 26 to 50
1963 598 3119 951 4961 1512
101 to 125 26 to 50
1589 484 2525 770 4016 1224
0 51 to 75
2334 712 3709 1130 5898 1798
1 to 25 51 to 75
1986 605 3156 962 5019 1530
26 to 50 51 to 75
1643 501 2610 795 4151 1265
51 to 75 51 to 75
1305 398 2073 632 3297 1005
76 to 100 51 to 75
973 296 1545 471 2458 749
101 to 125 51 to 75
647 197 1027 313 1634 498
0 76 to 100
1426 435 2265 691 3603 1098
1 to 25 76 to 100
1114 339 1769 539 2814 858
26 to 50 76 to 100
805 245 1279 390 2034 620
51 to 75 76 to 100
500 152 795 242 1264 385
76 to 100 76 to 100
199 61 317 97 504 154
101 to 125 76 to 100
0 0 0 0 0 0
0 101 to 115
971 296 1543 470 2454 748
1 to 25 101 to 115
674 206 1071 327 1704 519
26 to 50 101 to 115
380 116 604 184 961 293
51 to 75 101 to 115
89 27 142 43 226 69
76 to 100 101 to 115
0 0 0 0 0 0
101 to 125 101 to 115
0 0 0 0 0 0
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