Appendix B: Worksheets
Vigilant VS1 and VS2 Technical Reference Manual 211
Table 50: Longest allowable circuit path with 11 to 15 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
1817 554 2887 880 4592 1400
26 to 50 0
1070 326 1699 518 2703 824
51 to 75 0
321 98 510 156 811 247
76 to 100 0
0 0 0 0 0 0
101 to 125 0
0 0 0 0 0 0
0 1 to 25
1490 454 2367 721 3764 1147
1 to 25 1 to 25
745 227 1184 361 1883 574
26 to 50 1 to 25
0 0 0 0 0 0
51 to 75 1 to 25
0 0 0 0 0 0
76 to 100 1 to 25
0 0 0 0 0 0
101 to 125 1 to 25
0 0 0 0 0 0
0 26 to 50
421 128 668 204 1063 324
1 to 25 26 to 50
0 0 0 0 0 0
26 to 50 26 to 50
0 0 0 0 0 0
51 to 75 26 to 50
0 0 0 0 0 0
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
0 0 0 0 0 0
1 to 25 51 to 75
0 0 0 0 0 0
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 95
0 0 0 0 0 0
1 to 25 76 to 95
0 0 0 0 0 0
26 to 50 76 to 95
0 0 0 0 0 0
51 to 75 76 to 95
0 0 0 0 0 0
76 to 100 76 to 95
0 0 0 0 0 0
101 to 125 76 to 95
0 0 0 0 0 0