Secutron Inc. 31
4.2.2 Secur-bus Wiring Chart
Table 7 Secur-bus Wiring Chart
To calculate the wire run distance for any gauge wire and any maximum current value, use the
following formula:
Current (mA)* 22-awg Wire 18-awg Wire 16-awg Wire 14-awg Wire
ft ft ft m ft m ft m
15 2,524 769 6,410 1,954 10,160 3,098 16,000 4,878
30 1,262 384 3,200 976 5,080 1,549 8,000 2,439
45 842 256 2,135 651 3,385 1,032 5,340 1,628
60 631 192 1,600 488 2,540 774 4,000 1,220
75 505 154 1,280 390 2,030 619 3,200 976
90 421 128 1,065 325 1,690 515 2,670 814
105 361 110 915 279 1,450 442 2,285 697
120 315 96 800 244 1,270 387 2,000 610
135 281 86 710 216 1,125 343 1,780 543
150 252 77 640 195 1,015 309 1,600 488
165 229 70 580 177 920 280 1,455 444
180 210 64 530 162 845 258 1,335 407
195 194 59 490 149 780 238 1,230 375
210 180 55 455 139 725 221 1,145 349
225 168 51 425 130 675 206 1,065 325
*See module current ratings chart for current drawn by each module attached to the secur-bus.
Rmax = 1.25 ohms
Imax
Amps
Distance = Rmax × 1,000 feet
2(wire resistance in ohms per 1,000
feet)
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