Appendix B: Worksheets
210 Vigilant VS1 and VS2 Technical Reference Manual
Table 49: Longest allowable circuit path with 6 to 10 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
3543 1080 5629 1716 8952 2729
26 to 50 0
2818 859 4476 1364 7120 2170
51 to 75 0
2092 638 3323 1013 5285 1611
76 to 100 0
1365 416 2169 661 3450 1051
101 to 125 0
639 195 1015 309 1614 492
0 1 to 25
2895 882 4599 1402 7314 2229
1 to 25 1 to 25
2503 763 3976 1212 6324 1927
26 to 50 1 to 25
1778 542 2825 861 4493 1369
51 to 75 1 to 25
1053 321 1672 510 2660 811
76 to 100 1 to 25
327 100 519 158 825 252
101 to 125 1 to 25
0 0 0 0 0 0
0 26 to 50
1910 582 3035 925 4827 1471
1 to 25 26 to 50
1465 446 2327 709 3700 1128
26 to 50 26 to 50
740 225 1175 358 1869 570
51 to 75 26 to 50
14 4 23 7 36 11
76 to 100 26 to 50
0 0 0 0 0 0
101 to 125 26 to 50
0 0 0 0 0 0
0 51 to 75
1114 340 1770 539 2814 858
1 to 25 51 to 75
427 130 678 207 1079 329
26 to 50 51 to 75
0 0 0 0 0 0
51 to 75 51 to 75
0 0 0 0 0 0
76 to 100 51 to 75
0 0 0 0 0 0
101 to 125 51 to 75
0 0 0 0 0 0
0 76 to 100
114 35 182 55 289 88
1 to 25 76 to 100
0 0 0 0 0 0
26 to 50 76 to 100
0 0 0 0 0 0
51 to 75 76 to 100
0 0 0 0 0 0
76 to 100 76 to 100
0 0 0 0 0 0
101 to 125 76 to 100
0 0 0 0 0 0
0 101 to 125
0 0 0 0 0 0
1 to 25 101 to 125
0 0 0 0 0 0
26 to 50 101 to 125
0 0 0 0 0 0
51 to 75 101 to 125
0 0 0 0 0 0
76 to 100 101 to 125
0 0 0 0 0 0
101 to 125 101 to 125
0 0 0 0 0 0