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Authorized dealer · Car Audio Bargain
When an amplifier or a stack of amps starts pulling serious current, 1/0 AWG power wire is the cable that keeps voltage where it belongs. Choose Full Tilt 50-foot OFC power and ground cable in colors like teal, lime green, white, clear, red, black and blue, Full Tilt and Silver/Black 1/0 OFC amp kits, and options from XS Power and Sundown Audio.
We ship from Newton, North Carolina, as an authorized dealer for each of these brands.
1/0, often called one aught, is the step most builders take once a system outgrows 4 AWG. It is the standard size for main feeds to a distribution block, runs to a second battery in the rear, and Big 3 charging upgrades. Estimate your current by dividing total RMS power by your voltage and amp efficiency; if the answer lands well past 100 amps, 1/0 is the right starting point. Very high-current builds may need parallel 1/0 runs or larger cable.
Voltage drop grows with every foot of cable. A rear-mounted amp in a crew cab truck or full-size SUV can sit 20 feet or more from the battery, and that extra length can justify 1/0 even for a system that would be fine on 4 AWG in a compact car. Measure the real route, add slack, and remember the ground side: keep it short and use the same gauge.
Solid copper carries more current with less heat than copper-clad aluminum of the same size. A 1/0 CCA cable behaves more like a smaller copper cable, so if budget pushes you toward CCA, size up or shorten the run. The Full Tilt 1/0 AWG power wire and kits listed here are OFC, as are the Silver/Black kits.
Fuse the cable within about 18 inches of the battery with an ANL fuse that does not exceed the wire's capacity, from fuses and fuse holders. Crimp 1/0 lugs from terminals and lugs and seal each one with 1/0 heat shrink. For mid-power amps on short runs, 4 AWG power wire may be all you need. Heavy current also deserves strong charging support, so consider batteries sized for your system, and find every install item under Cable & Wire.
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