Tell us how hard the system works and how far the current travels. We’ll match the right power cable—no gauge guesswork required.
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Current draw— A
Target drop≤ 3%
Load voltage— V
Electrical system caution
Your car may need electrical upgrades.
Systems above 1,000 watts can place substantial demand on factory charging equipment. Before choosing power wire, consider whether your battery and alternator can support the estimated current draw.
Alternator recommendations
Battery recommendations
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Required Wire
Required size for this system.
Matched to your system
Price Comparison
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Why this size?
First-pass assumptions
Selected system voltage and amplifier efficiency
Positive cable distance only; ground path must be equally capable
3% maximum positive-cable voltage drop
300 CM/A minimum for OFC; 450 CM/A for CCA
Planning estimate only. Verify the amplifier manufacturer’s fuse and wiring requirements, protect every cable near its power source, and account for terminals, grounds, heat, bundling, and local installation rules. Product images and buttons open the selected retailer in a new window.
