Does anyone know where there is a chart that can tell me what wire size to get given the amperage draw, and the run length?

I have a BIG stereo going into my car, I don't want the amps to "choke" on smaller wires.

Cheers

 

GSRaCeRbOI just posted a chart not too long ago

 

Wire Gauge Current Flow Max Total Amp Power
Class AB (60% eff) Max Total Amp Power
Class D (75% eff)
0 awg 330 amps 2731 watts 3414 watts
1 awg 262 amps 2168 watts 2710 watts
2 awg 208 amps 1720 watts 2151 watts
3 awg 165 amps 1365 watts 1707 watts
4 awg 131 amps 1084 watts 1355 watts
5 awg 104 amps 860 watts 1075 watts
6 awg 82 amps 683 watts 853 watts
7 awg 65 amps 542 watts 677 watts
8 awg 52 amps 430 watts 537 watts
9 awg 41 amps 341 watts 427 watts
10 awg 33 amps 271 watts 339 watts
11 awg 26 amps 215 watts 269 watts
12 awg 21 amps 171 watts 213 watts
13 awg 16 amps 135 watts 169 watts
14 awg 13 amps 107 watts 134 watts

 

it depends on how big your equipment is, wattage, amps, load, distance, etc.. lots of variables.. i hope this chart works....

Recommended Cable Size by Power and Distance
Total RMS
Power (watts) Distance
4 feet 8 feet 12 feet 16 feet 20 feet
100 10 gauge 10 gauge 8 gauge 8 gauge 4 gauge
200 10 gauge 8 gauge 8 gauge 4 gauge 4 gauge
400 8 gauge 8 gauge 4 gauge 4 gauge 4 gauge
600 8 gauge 4 gauge 4 gauge 4 gauge 4 gauge
800 4 gauge 4 gauge 4 gauge 2 gauge 2 gauge
1000 4 gauge 4 gauge 2 gauge 2 gauge 2 gauge
1400 4 gauge 2 gauge 2 gauge 2 gauge 2 gauge

Current Draw by Power
Total RMS
Power (watts) Current
Amps
100 16
200 32
400 64
600 96
800 128
1000 160
1200 172
1400 188
Power & Ground Cable Specs
Cable Size
Wire Gauge Current Capacity
Amperage (amps)
1/0 350
2 225
4 150
8 100
10 60
12 40
14 25
16 15