Page 9 579-1019 Rev M
4009 IDNAC Repeater Installation Instructions
Table 2: UTP wiring limit based on alarm current
2.000 132 ft 210 ft 334 ft 531 ft 845 ft
2.250 118 ft 187 ft 297 ft 472 ft 751 ft
2.500 106 ft 168 ft 267 ft 425 ft 676 ft
2.750 96 ft 153 ft 243 ft 386 ft 615 ft
3.000 88 ft 140 ft 223 ft 354 ft 563 ft
Wiring distance must not exceed 4000 ft
Table 3: UTP wiring limit based on communication
Local and extended loop Class A wiring: Total loop length from the Repeater
Local Class B wiring:
Distance to the Last ApplianceLine Impedance (Ohms) Devices
20
AWG
18
AWG
16
AWG
14
AWG
12
AWG
14.54 1 1252 ft 2038 ft 3241 ft 4000 ft 4000 ft
12.96 5 1142 ft 1815 ft 2887 ft 4000 ft 4000 ft
11.38 10 1003 ft 1595 ft 2536 ft 4000 ft 4000 ft
10.14 15 893 ft 1420 ft 2258 ft 3590 ft 4000 ft
9.12 20 804 ft 1278 ft 2033 ft 3231ft 4000 ft
8.28 25 730 ft 1160 ft 1845 ft 2934 ft 4000 ft
7.58 30 668 ft 1061 ft 1688 ft 2683 ft 4000 ft
6.97 35 614 ft 977 ft 1553 ft 2469 ft 3928 ft
6.45 40 568 ft 904 ft 1437 ft 2285 ft 3634 ft
6.00 45 528 ft 840 ft 1336 ft 2124 ft 3378 ft
5.60 50 493 ft 784 ft 1247 ft 1982 ft 3152 ft
5.24 55 462 ft 734 ft 1168 ft 1856 ft 2952 ft
4.92 60 434 ft 690 ft 1097 ft 1744 ft 2774 ft
4.75 63 419 ft 665 ft 1058 ft 1682 ft 2675 ft
4.64 65 409 ft 650 ft 1034 ft 1643 ft 2613 ft
4.38 70 386 ft 614 ft 976 ft 1552 ft 2468 ft
4.15 75 366 ft 581 ft 924 ft 1469 ft 2337 ft
3.94 80 347 ft 551 ft 877 ft 1394 ft 2217 ft
3.74 85 330 ft 524 ft 833 ft 1325 ft 2107 ft
3.56 90 314 ft 499 ft 794 ft 1262 ft 2006 ft
3.40 95 299 ft 476 ft 757 ft 1203 ft 1913 ft
3.24 100 286 ft 454 ft 723 ft 1149 ft 1827 ft
3.10 105 273 ft 435 ft 691 ft 1099 ft 1748 ft
2.97 110 262 ft 416 ft 662 ft 1052 ft 1673 ft
2.85 115 251 ft 399 ft 634 ft 1009 ft 1604 ft
2.73 120 241 ft 383 ft 609 ft 968 ft 1539 ft
2.58 127 228 ft 362 ft 576 ft 915 ft 1456 ft
Wiring distance must not exceed 4000 ft
Table 4: Ohms per 1000 ft
Gage Ohms/1000 ft
20 AWG 11.347
18 AWG 7.137
16 AWG 4.488
14 AWG 2.8230
12 AWG 1.7750
NOTE: Although the required wire for IDNAC circuits is twisted pair (controlled impedance) wiring, in some applications it may be
advantageous to use existing wiring that is not twisted pair. This is only permitted if both conductors of the IDNAC circuit reside in the same
metal conduit, and only under certain conditions. Check with your local sales office before using any wiring that is not twisted pair.
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