Harrington Signal Tracker T8000 - Install Manual - Manual (Page 43)

D
C
HSI #780-0867 FireSpy Tracker Installation Manual
39
Table 3-2: Wire Lengths for powering devices (worst case)*
Load (A) Maximum distance to farthest point (ft)
18 AWG 16 AWG 14 AWG 12 AWG
0.10 1878 2984 4753 7561
0.25 751 1194 1901 3024
0.50 376 597 951 1512
0.75 250 398 634 1008
1.00 188 298 475 756
1.25 150 239 380 605
1.50 125 199 317 504
1.75 107 171 272 432
2.00 94 149 238 378
2.25 83 133 211 336
2.50 75 119 190 302
2.75 68 109 173 275
3.00 63 99 158 252
* The result is for the worst case loading. Best case loading allows the cable to be twice as long, considering resistance only.
These values were obtained using Eq. C-1 with a maximum voltage drop of 2.4V
Table 3-3: Wire Lengths for powering T8000 devices*
Module Voltage
drop (V)
Load
(mA)
Maximum distance to device (ft)
18 AWG 16 AWG 14 AWG 12 AWG
RAN / ANN 6 80 5869 9325 14854 23627
LDV 6 TBD TBD TBD TBD TBD
LCU 4.6 1150 313 497 792 1260
CM (one zone) 6 54 8695 13815 22006 35004
CM (five zones) 6 214 2194 3486 5553 8833
SRM 6 230 2041 3244 5167 8218
* These distances are valid if only one device is powered by the cable. If more than one device is connected to the cable, the
distance must be based on the voltage drop at each device. Other considerations may also apply.
These values were obtained using Eq. C-1 with a maximum voltage drop and current draw as specified for each device.