GE EST iO64 Technical Reference Manual page 229

Table 2: Longest allowable circuit path with zero SIGA-UMs or SIGA-MABs configured for 2-wire smoke detectors
Number of Number of
detectors modules (1
or 2 channel)
1 to 25 0
26 to 50 0
51 to 75 0
76 to 100 0
101 to 125 0
0 1 to 25
1 to 25 1 to 25
26 to 50 1 to 25
51 to 75 1 to 25
76 to 100 1 to 25
101 to 125 1 to 25
0 26 to 50
1 to 25 26 to 50
26 to 50 26 to 50
51 to 75 26 to 50
76 to 100 26 to 50
101 to 125 26 to 50
0 51 to 75
1 to 25 51 to 75
26 to 50 51 to 75
51 to 75 51 to 75
76 to 100 51 to 75
101 to 125 51 to 75
0 76 to 100
1 to 25 76 to 100
26 to 50 76 to 100
51 to 75 76 to 100
76 to 100 76 to 100
101 to 125 76 to 100
0 101 to 125
1 to 25 101 to 125
26 to 50 101 to 125
51 to 75 101 to 125
76 to 100 101 to 125
101 to 125 101 to 125
EST iO64 and iO500 Technical Reference Manual
Maximum allowable wire distance using nontwisted, nonshielded and
twisted, nonshielded wire pairs (evenly distributed)
18 AWG
ft. m
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
5172 1577
4936 1504
4968 1514
4525 1379
4095 1248
3682 1122
3283 1001
2899 884
3241 988
2901 884
2566 782
2239 683
1919 585
1606 489
2087 636
1795 547
1507 459
1223 373
942 287
666 203
16 AWG
ft. m
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
8217 2505
7841 2390
7892 2406
7188 2191
6506 1983
5849 1783
5216 1590
4605 1404
5150 1570
4608 1405
4077 1243
3557 1084
3049 929
2551 777
3316 1011
2852 869
2394 730
1943 592
1497 456
1057 322
Appendix B: Worksheets
14 AWG
ft. m
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
13069 3984
12471 3801
12553 3826
11433 3485
10348 3154
9303 2836
8296 2529
7324 2232
8190 2496
7329 2234
6485 1977
5658 1725
4849 1478
4057 1237
5273 1607
4536 1383
3808 1161
3090 942
2381 726
1682 513
219