Installation Manual
Table Of Contents
7 
5   APPENDIX Ⅱ12V DC WIRE GAUGE AND TRANSMISSION 
DISTANCE RELATIONSHIP SHEET 
The recommended max transmission distance is under the following environments: The wire 
diameter is fixed and the DC 12V power voltage loss rate is below 10%. For the device of DC 
power supplying, the max allowed voltage loss rate is 10%. All the wires listed in the following 
sheet are copper wire. (Copper wire resistance
) 
 mm 
Feet(m) 
w  
0.8000  1.000  1.250  2.000 
5 
122.13
(
37.23
)
190.83(58.16)  298.17(90.88) 
763.31
(
232.66
)
10 
61.06(18.61)  95.41(29.08)  149.08(45.44) 
381.66
(
116.33
)
15 
40.71
(
12.41
)
63.61
(
19.39
)
99.39
(
30.29
)
254.44
(
77.55
)
20 
30.53(9.31)  47.71(14.54)  74.54(22.72)  190.83(58.16) 
25 
24.43(7.45)  38.17(11.63)  59.63(18.18)  152.66(46.53) 
30 
20.35(6.20)  31.80(9.69)  49.69(15.15)  127.22(38.78) 
35 
17.45(5.32)  27.26(8.31)  42.60(12.98)  109.04(33.24) 
40 
15.27(4.65)  23.85(7.27)  37.27(11.36)  95.41(29.08) 
45 
13.57(4.14)  21.20(6.46)  33.13(10.10)  84.81(28.85) 
50 
12.21(3.72)  19.08(5.82)  29.82(9.09)  76.33(23.27) 
55 
11.10(3.38)  17.35(5.29)  27.11(8.26)  69.39(21.15) 
60 
10.18(3.10)  15.90(4.85)  24.85(7.57)  63.61(19.39) 
65 
9.39(2.86)  14.68(4.47)  22.94(6.99)  58.72(17.90) 
70 
8.72(2.66)  13.63(4.15)  21.30(6.49)  54.52(16.62) 
75 
8.14(2.48)  12.72(3.88)  19.88(6.06)  50.89(15.51) 
80 
7.63(2.33)  11.93(3.64)  18.64(5.68)  47.71(14.54) 
85 
7.18(2.19)  11.23(3.42)  17.54(5.35)  44.90(13.69) 
90 
6.78(2.07)  10.60(3.23)  16.56(5.05)  42.41(12.93) 
95 
6.43(1.96)  10.04(3.06)  15.69(4.78)  40.17(12.25) 
100 
6.11(1.86)  9.54(2.91)  14.91(4.54)  38.17(11.63) 










