Edwards Signaling 5541M-Y6 - Manual (Page 28)

P/N 3100471 ISSUE 3 PAGE 28
Maximum signal loss allowed [1]
5532M Amplifier Circuit Maximum Wire Length Calculation
Use this worksheet to determine the maximum wire length of
an Audio Amplifier appliance circuit. Fill in one worksheet for
each Audio Amplifier appliance circuit connected to the panel.
Wire length matrix
Wire lengths in the following table are based on a voltage drop
of 1.6 volts or 15% of the Panel's audio output End of line
appliance.
Wire resistance per 1000 ft/pair x 2 [2]
(2x the number in note 2)
Total operating current required
Maximum wire length
V
x 1000
/ ohms
ohms
/ A
ft
Current Maximum wire length (ft)
required (A) 18 AWG 16 AWG 14 AWG 12 AWG
0.25 584 950 1460 2170
0.50 292 474 730 1084
0.75 194 316 486 722
1.00 146 236 364 542
1.25 116 190 292 434
1.50 92 158 242 362
Notes
[1] 1.6V
rms
loss in order to produce 75 dBA minimum.
[2] Use 1.6 for 12 AWG and 2.5 sq mm wire, 2.6 for 14 AWG and 1.5 sq mm wire, 4.2 for 16 AWG and 1.0 sq mm wire and 6.6
for 18 AWG and 0.75 sq mm wire