Simplex 4100-5101 Installation Instructions Manual page 14

Step 4. XPS Field Wiring,
Class B NAC
Table 4 lists the maximum distances from the XPS to the last appliance in a Class B configuration,
Wiring Table
depending on wire gauge and current. Use Table 4 to calculate wire distances for your application
if you are using Class B wiring.
Max Distance
Alarm Current
w/ 18 AWG
@ 24 V
(0.8231 mm
0.25 A 840 ft. (256 m)
0.50 A 420 ft. (128 m)
0.75 A 280 ft. (85 m)
1 A 210 ft. (64 m)
1.25 A 168 ft. (51 m)
1.50 A 140 ft. (43 m)
1.75 A 120 ft. (37 m)
2 A 105 ft. (32 m)
2.25 A 93 ft. (28 m)
2.50 A 84 ft. (26 m)
2.75 A 76 ft. (23 m)
3 A 70 ft. (21 m)
Notes:

Max Distance = distance from XPS to last appliance.

This table is calculated at 50 degrees Centigrade (120 degrees Fahrenheit). If you
are installing in locations that could be exposed to higher temperatures, refer to NEC
Table 8.

Distances are based on a 3 V drop, and take into account the worst-case panel
output voltage.

If CI wire is used instead of housing cable in a fire rated enclosure, reduce wiring
distances by 38 feet (12 m) for every 10 feet (3 m) of potential exposure.
Continued
Table 4. Class B Wiring Distances
Max Distance w/ Max Distance
16 AWG
2 2
) (1.309 mm )
1,335 ft. (407 m) 2,126 ft. (648 m)
667 ft. (203 m) 1,063 ft. (324 m)
445 ft. (136 m) 709 ft. (216 m)
334 ft. (102 m) 532 ft. (162 m)
267 ft. (81 m) 425 ft. (130 m)
222 ft. (68 m) 354 ft. (108 m)
191 ft. (58 m)
167 ft. (51 m)
148 ft. (45 m)
133 ft. (41 m)
121 ft. (37 m)
111 ft. (34 m)
14
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Max Distance w/
w/ 14 AWG 12 AWG
2
(2.081 mm ) (3.309 mm
3,382 ft. (1,031 m)
1,691 ft. (515 m)
1,127 ft. (344 m)
845 ft. (258 m)
676 ft. (206 m)
564 ft. (172 m)
304 ft. (93 m) 483 ft. (147 m)
266 ft. (81 m) 423 ft. (129 m)
236 ft. (72 m) 376 ft. (115 m)
213 ft. (65 m) 338 ft. (103 m)
193 ft. (59 m) 307 ft. (94 m)
177 ft. (54 m) 282 ft. (86 m)
DC
Resistanc
2
) e
12 Ohms
6 Ohms
4 Ohms
3 Ohms
2.4 Ohms
2 Ohms
1.71
Ohms
1.5 Ohms
1.33
Ohms
1.2 Ohms
1.09
Ohms
1 Ohm