Appendix B: Worksheets
208 Vigilant VS1 and VS2 Technical Reference Manual
Table 47: Longest allowable circuit path with zero 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 5172 1577 8217 2505 13069 3984
0 1 to 25 5172 1577 8217 2505 13069 3984
1 to 25 1 to 25 5172 1577 8217 2505 13069 3984
26 to 50 1 to 25 5172 1577 8217 2505 13069 3984
51 to 75 1 to 25 5172 1577 8217 2505 13069 3984
76 to 100 1 to 25 5172 1577 8217 2505 13069 3984
101 to 125 1 to 25 5172 1577 8217 2505 13069 3984
0 26 to 50 5172 1577 8217 2505 13069 3984
1 to 25 26 to 50 5172 1577 8217 2505 13069 3984
26 to 50 26 to 50 5172 1577 8217 2505 13069 3984
51 to 75 26 to 50 5172 1577 8217 2505 13069 3984
76 to 100 26 to 50 5172 1577 8217 2505 13069 3984
101 to 125 26 to 50 4936 1504 7841 2390 12471 3801
0 51 to 75 4968 1514 7892 2406 12553 3826
1 to 25 51 to 75 4525 1379 7188 2191 11433 3485
26 to 50 51 to 75 4095 1248 6506 1983 10348 3154
51 to 75 51 to 75 3682 1122 5849 1783 9303 2836
76 to 100 51 to 75 3283 1001 5216 1590 8296 2529
101 to 125 51 to 75 2899 884 4605 1404 7324 2232
0 76 to 100 3241 988 5150 1570 8190 2496
1 to 25 76 to 100 2901 884 4608 1405 7329 2234
26 to 50 76 to 100 2566 782 4077 1243 6485 1977
51 to 75 76 to 100 2239 683 3557 1084 5658 1725
76 to 100 76 to 100 1919 585 3049 929 4849 1478
101 to 125 76 to 100 1606 489 2551 777 4057 1237
0 101 to 125 2087 636 3316 1011 5273 1607
1 to 25 101 to 125 1795 547 2852 869 4536 1383
26 to 50 101 to 125 1507 459 2394 730 3808 1161
51 to 75 101 to 125 1223 373 1943 592 3090 942
76 to 100 101 to 125 942 287 1497 456 2381 726
101 to 125 101 to 125 666 203 1057 322 1682 513