system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:When jumpstarting a car, why is it important to always start with the positive gauge (red) ?

Every one always told me to start with positive, but i never understood the reason...
gpt
Sometimes, when you make the last connection, a spark jumps from the cable to what ever you're about to clip it to. If you start with the red cable, then the last connection will be made to an unpainted metal part of the car. That way, if a spark occurs, it hits the metal part of the car, rather than the battery, which reduces the chance of igniting hydrogen gas coming from the battery.