Simplex 4100ES Installation Manual page 177

Alarm Current @ 24 Max Distance with
VDC 18 AWG
1.50 A 140 ft. (43 m)
1.75 A 120 ft. (37 m)
2.00 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)
3.00 A 70 ft. (21 m)
Note:
• Max Distance = distance from SPS or RPS to last appliance.
• This table is calculated at 49 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 circuit integrity 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.
22.5.3 SPS NAC Field Wiring Guidelines
22.5.3.1 Guidelines
Review the following guidelines for NACs before you begin NAC field wiring.
• All wiring is 18 AWG (minimum) to 12 AWG (maximum).
• All wiring is supervised and power-limited.
• The maximum alarm current is 3 A per circuit. The supervisory current is 2.03 mA at 24 VDC.
• The nominal voltage rating is 24 VDC, 2 V p-p ripple (maximum).
• The total available current from the SPS is 9 A, unless it is used for REGULATED
• 24 VDC notification appliances, where the SPS/RPS is rated for 4Amps notification. Any current used for card power by modules
plugged into the PDI, as well as any auxiliary 24 VDC current, must be deducted from the total available current.
• Terminal designations "+" and "-" are for the alarm state.
• All 4901-, 4903- and 4904- series appliances are Special Application with SPS. SPS is rated 9A, 3A per circuit. SPS regulated rating per
UL864 is 4A maximum per SPS. Compatible TrueAlert non-addressable appliances for NACs are:
1
- 4901-series Horn
1
- 4903-series A/V
1
- 4903-series S/V
1
- 4904-series V/O
- 4906-Multi-Candela-series A/V, V/O, S/V, and others
- 49CMT-series, Multi-Tone
- 49CMTV-series, Multi-Tone/Multi-Candela
1
A maximum of 70 appliances can be supported per circuit.
2
Each 49CMT and 49CMTV series appliance counts as 2.7 regular appliances and no more than 25 49CMT or 20 49CMTV-series
appliances may be placed on one circuit.
page 175
Table 33: Class B Wiring Distances
Max Distance with
16 AWG
222 ft. (68 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)
1
1,2
1, 2
4100ES Fire Alarm System Installation Guide
Max Distancewith 14 Max Distance with 12
AWG AWG
354 ft. (108 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 Resistance
2 Ohms
1.71 Ohms
1.5 Ohms
1.33 Ohms
1.2 Ohms
1.09 Ohms
1 Ohm
574-848 Rev. BQ