Appendix A: Wire Size Charts - Toa A-503A Manual

TOA Electronics Amplifier Guide
Table 1 Speaker Cable Lengths (ft) and Gauges (AWG) for 70.7 V Line with 1 dB Power Loss
Wire Gauge
70.7 V
Load Power Load Impedance
(W)
10
15
20
30
40
60
100
200
400
Table 2 Speaker Cable Lengths (ft) and Gauges (AWG) for 25 V Line with 1 dB Power Loss
Wire Gauge
25 V
Load Power Load Impedance
(W)
10
15
20
30
40
60
100
200
* Greater than 10,000 feet
** Not recommended, may exceed safe current capacity of wire

Appendix A: Wire Size Charts

10
(AWG)
( )
490 *
327 *
245 *
163 10,000
122 7,400
81 5,000
49 2,900
24.5 1,450
12.2 730
10
(AWG)
( )
61 3,700
41 2,500
31 1,850
20 1,250
15 925
10 625
6 363
3 181
12 14 16
Maximum Cable Distance (ft)
* * 7,200
* 7,600 4,800
9,200 5,600 3,600
6,200 3,800 2,400
4,600 2,800 1,800
3,200 1,900 1,200
1,820 1,120 720
910 560 360
460 280 180
12 14 16
Maximum Cable Distance (ft)
2,300 1,400 900
1,550 950 600
1,150 700 450
775 475 300
575 350 225
400 238 150
228 140 90
114 70 **
A-1
18 20 22
4,600 2,800 1,800
3,000 1,920 1,200
2,200 1,400 900
1,500 960 600
1,100 700 450
730 480 **
230 ** **
110 ** **
** ** **
18 20 22
575 350 225
375 240 150
275 175 113
188 120 **
138 ** **
** ** **
** ** **
** ** **