What Gauge Wire Should Be Used for Jump-Starting a Car?

[JayceFitz]

For ordinary family cars, wires with a cross-section of 10 square millimeters or more are required, while large trucks need wires around 25 square millimeters. Precautions for jump-starting a car: A 10 square millimeter wire is generally sufficient for jump-starting a car, but it is essential to use dedicated jump-start cables to ensure success and avoid damaging the battery. First, disconnect the black clamp from the vehicle with power, i.e., the negative terminal, then remove the black clamp from the originally dead vehicle. Next, disconnect the red positive clamp from the powered vehicle and finally remove the red clamp from the originally dead vehicle. Things to consider when purchasing wires: Jump-start cables that are too long can lead to power loss, potentially preventing the car from starting. It is generally recommended to use cables that are 3–4 meters long. Additionally, always choose high-quality wires.