Class B Nac Wiring Table - Simplex 4100ES-S1 Installation & Maintenance

Power Supply Wiring Distances,
Class B NAC
Wiring Table
Alarm
Current @ 0.75 mm
24V
0.25A 230m
0.50A 120m
0.75A
1.00A
1.25A
1.50A
1.75A
2.00A
2.25A
2.50A
2.75A
3.00A
Table 5-2 lists the maximum distances from the NAC terminal block to the last appliance
in a Class B (string) configuration, depending on wire gauge and current. Use Table 5-2
to calculate wire distances for your application if you are using Class B wiring.
Table 5-2. Class B (string) Wiring Distances
2 2
1.00 mm
310m
150m
77m 100m
58m 77m
46m 62m
38m 51m
33m 44m
29m 38m
26m 34m
23m 31m
21m 28m
19m 26m
Notes:

Max Distance = distance from SPS to last appliance.

This table is calculated at 49 degrees Centigrade.

Distances are based on a 3V drop, and take into account the worst-case panel
output voltage. These distances are based on the worst case of having one single
load at the furthest point.

If circuit integrity wire is used instead of housing cable in a fire rated enclosure,
reduce wiring distances by 12 m for every 3 m of potential exposure.
Continued
2
1.50 mm 2.50 mm
460m 770m
230m 380m
150m 260m
120m 190m
92m 150m
77m 130m
66m 110m
58m 96m
51m 85m
46m 77m
42m 70m
38m 64m
5-7
2 2
4.00 mm
Resistance
1200m 12.0 ohms
620m 6.0 ohms
410m 4.0 ohms
310m 3.0 ohms
250m 2.4 ohms
210m 2.0 ohms
180m 1.7 ohms
150m 1.5 ohms
140m 1.3 ohms
120m 1.2 ohms
110m 1.1 ohms
100m 1.0 ohms
DC