KnuKonceptz KCA Kable 4 Gauge Power Wire Black (sold in 10' increments) Sold in 10' increments - 1 unit = 10', 3 units = 30' Oversized Copper Clad Aluminun 4 Gauge Cable Rated for 100A load @ 20' Ultra Flex Black PVC - 10mm OD See cross section image to avoid cheap knock offs <span class="a-text-bold">Core Material: </span> 34 Gauge Copper Clad Aluminum <span class="a-text-bold">Length: </span> Available in various length <span class="a-text-bold">Dielectric: </span> Ultra Flex PVC <span class="a-text-bold">Outer Diameter: </span>11mm <span class="a-text-bold">Core Diameter: </span>8mm (estimated) <span class="a-text-bold">Max Load: </span>100A @ 20&#039; <span class="a-text-bold">Max Load (amps</span>) Using American Wire Gauge standards, the gauge of stranded wire is determined by the total area of the conductor. To calculate this you would take the area of each strand and add it together. This area, in square mm, then determines gauge. Diameter is not as critical with stranded wire, this is due to the tiny air gaps between each strand. Diameter may fluctuate with strand size and how tightly wound the rope of the cable is. The smaller the number, the larger the wire, until you reach zero or aught (0 or 1/0). From zero, you then have double aught (00 or 2/0), three aught (000 or 3/0) ... Based on AWG, this cable&#039;s true gauge is #3 Copper is the best conductor, Oversized CCA is the best value. By Increasing the conductor size, we can offset the conductivity differences while maintaining a lower price. Always follow the manufacturer&#039;s max rating on battery cable. Excessive loads will cause more distortion in amplifiers, create more heat, and will shorten the life of your electronics Proper termination is crucial, poor connections will create poor performance. CCA is not recommended for Marine or UTV applications.