D.1: Ms-5Ud-3(E) & Ms-10Ud-3(E) Nac Wiring; D.2: Ms-5Ud-7(C/E) & Ms-10Ud-7(C/E) Nac Wiring - Honeywell Fire-Lite Alarms MS-5UD Series Manual

Wire Requirements
D.1 MS-5UD-3(E) & MS-10UD-3(E) NAC Wiring
The following table lists NAC wiring requirements for the MS-5UD-3(E) & MS-10UD-3(E) FACP
which utilizes the FLPS-3 power supply.
Max.
allowable
NAC Load
total loop
(Amps)
resistance
(ohms)
0.25 9.60
0.5 4.80
0.75 3.20
1 2.40
1.25 1.92
1.5 1.60
1.75 1.37
2 1.20
2.25 1.07
2.5 0.96
Table D.2 NAC Wiring Requirements for FACP with FLPS-3 Power Supply
NOTE: Calculations are based on Direct-Current Resistance data for uncoated copper wire, per
National Electrical Code (2005 Edition) Table 8, Conductor Properties.
D.2 MS-5UD-7(C/E) & MS-10UD-7(C/E) NAC Wiring
The following table lists NAC wiring requirements for the MS-5UD-7(C/E) & MS-10UD-7(C/E)
FACP which utilizes the FLPS-7 power supply.
Max.
allowable
NAC Load
total loop
(Amps)
resistance
(ohms)
0.25 13.60
0.5 6.80
0.75 4.53
1 3.40
1.25 2.72
1.5 2.27
1.75 1.94
2 1.70
2.25 1.51
2.5 1.36
2.75 1.24
3 1.13
Table D.3 NAC Wiring Requirements for FACP with FLPS-7 Power Supply
NOTE: Calculations are based on Direct-Current Resistance data for uncoated copper wire, per
National Electrical Code (2005 Edition) Table 8, Conductor Properties.
154
CLASS-B
Max. allowable wire pair length
(feet)
AWG 12 AWG 14 AWG 16
solid solid solid
2487 1564 982
1244 782 491
829 521 327
622 391 245
497 313 196
415 261 164
355 223 140
311 195 123
276 174 109
249 156 98
CLASS-B
Max. allowable wire pair length
(feet)
AWG 12 AWG 14 AWG 16
solid solid solid
3523 2215 1391
1762 1107 695
1174 738 464
881 554 348
705 443 278
587 369 232
503 316 199
440 277 174
391 246 155
352 221 139
320 201 126
294 185 116
MS-5UD-3(E) & MS-10UD-3(E) NAC Wiring
Max. allowable wire pair length
AWG 18 AWG 12 AWG 14
solid solid
618 1244
309 622
206 415
154 311
124 249
103 207
88 178
77 155
69 138
62 124
Max. allowable wire pair length
AWG 18 AWG 12 AWG 14
solid solid
875 1762
438 881
292 587
219 440
175 352
146 294
125 252
109 220
97 196
88 176
80 160
73 147
MS-5UD & MS-10UD Series Manual — P/N 52626:C2 1/24/2012
CLASS-A
(feet)
AWG 16 AWG 18
solid solid solid
782 491 309
391 245 154
261 164 103
195 123 77
156 98 62
130 82 51
112 70 44
98 61 39
87 55 34
78 49 31
CLASS-A
(feet)
AWG 16 AWG 18
solid solid solid
1107 695 438
554 348 219
369 232 146
277 174 109
221 139 88
185 116 73
158 99 63
138 87 55
123 77 49
111 70 44
101 63 40
92 58 36